/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 17:38:21,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 17:38:21,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 17:38:21,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 17:38:21,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 17:38:21,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 17:38:21,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 17:38:21,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 17:38:21,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 17:38:21,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 17:38:21,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 17:38:21,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 17:38:21,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 17:38:21,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 17:38:21,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 17:38:21,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 17:38:21,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 17:38:21,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 17:38:21,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 17:38:21,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 17:38:21,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 17:38:21,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 17:38:21,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 17:38:21,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 17:38:21,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 17:38:21,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 17:38:21,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 17:38:21,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 17:38:21,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 17:38:21,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 17:38:21,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 17:38:21,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 17:38:21,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 17:38:21,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 17:38:21,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 17:38:21,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 17:38:21,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 17:38:21,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 17:38:21,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 17:38:21,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 17:38:21,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 17:38:21,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 17:38:21,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 17:38:21,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 17:38:21,788 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 17:38:21,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 17:38:21,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 17:38:21,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 17:38:21,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 17:38:21,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 17:38:21,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 17:38:21,790 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 17:38:22,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 17:38:22,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 17:38:22,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 17:38:22,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 17:38:22,169 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 17:38:22,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-08 17:38:22,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9cc0a6/0546b891cbce46fbbf6b17dc1d1cccd9/FLAGbf8c3ba4b [2020-07-08 17:38:22,705 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 17:38:22,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-07-08 17:38:22,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9cc0a6/0546b891cbce46fbbf6b17dc1d1cccd9/FLAGbf8c3ba4b [2020-07-08 17:38:23,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d9cc0a6/0546b891cbce46fbbf6b17dc1d1cccd9 [2020-07-08 17:38:23,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 17:38:23,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 17:38:23,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 17:38:23,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 17:38:23,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 17:38:23,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec38cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23, skipping insertion in model container [2020-07-08 17:38:23,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 17:38:23,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 17:38:23,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:38:23,390 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 17:38:23,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 17:38:23,426 INFO L208 MainTranslator]: Completed translation [2020-07-08 17:38:23,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23 WrapperNode [2020-07-08 17:38:23,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 17:38:23,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 17:38:23,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 17:38:23,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 17:38:23,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (1/1) ... [2020-07-08 17:38:23,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 17:38:23,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 17:38:23,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 17:38:23,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 17:38:23,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (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 [2020-07-08 17:38:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 17:38:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 17:38:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 17:38:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 17:38:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 17:38:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 17:38:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 17:38:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 17:38:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 17:38:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 17:38:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 17:38:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 17:38:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 17:38:24,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 17:38:24,027 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-08 17:38:24,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:38:24 BoogieIcfgContainer [2020-07-08 17:38:24,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 17:38:24,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 17:38:24,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 17:38:24,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 17:38:24,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 05:38:23" (1/3) ... [2020-07-08 17:38:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e053e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:38:24, skipping insertion in model container [2020-07-08 17:38:24,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 05:38:23" (2/3) ... [2020-07-08 17:38:24,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e053e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 05:38:24, skipping insertion in model container [2020-07-08 17:38:24,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 05:38:24" (3/3) ... [2020-07-08 17:38:24,040 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-07-08 17:38:24,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 17:38:24,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 17:38:24,086 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 17:38:24,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 17:38:24,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 17:38:24,113 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 17:38:24,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 17:38:24,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 17:38:24,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 17:38:24,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 17:38:24,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 17:38:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-08 17:38:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-08 17:38:24,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:38:24,145 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] [2020-07-08 17:38:24,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:38:24,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:38:24,152 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-07-08 17:38:24,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:38:24,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672449556] [2020-07-08 17:38:24,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:38:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:24,324 INFO L280 TraceCheckUtils]: 0: Hoare triple {50#true} assume true; {50#true} is VALID [2020-07-08 17:38:24,325 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {50#true} {50#true} #101#return; {50#true} is VALID [2020-07-08 17:38:24,328 INFO L263 TraceCheckUtils]: 0: Hoare triple {50#true} call ULTIMATE.init(); {50#true} is VALID [2020-07-08 17:38:24,328 INFO L280 TraceCheckUtils]: 1: Hoare triple {50#true} assume true; {50#true} is VALID [2020-07-08 17:38:24,329 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {50#true} {50#true} #101#return; {50#true} is VALID [2020-07-08 17:38:24,329 INFO L263 TraceCheckUtils]: 3: Hoare triple {50#true} call #t~ret3 := main(); {50#true} is VALID [2020-07-08 17:38:24,330 INFO L280 TraceCheckUtils]: 4: Hoare triple {50#true} havoc ~i~0; {50#true} is VALID [2020-07-08 17:38:24,330 INFO L280 TraceCheckUtils]: 5: Hoare triple {50#true} havoc ~pvlen~0; {50#true} is VALID [2020-07-08 17:38:24,331 INFO L280 TraceCheckUtils]: 6: Hoare triple {50#true} havoc ~tmp___1~0; {50#true} is VALID [2020-07-08 17:38:24,331 INFO L280 TraceCheckUtils]: 7: Hoare triple {50#true} ~k~0 := 0; {50#true} is VALID [2020-07-08 17:38:24,332 INFO L280 TraceCheckUtils]: 8: Hoare triple {50#true} havoc ~n~0; {50#true} is VALID [2020-07-08 17:38:24,332 INFO L280 TraceCheckUtils]: 9: Hoare triple {50#true} ~i~0 := 0; {50#true} is VALID [2020-07-08 17:38:24,333 INFO L280 TraceCheckUtils]: 10: Hoare triple {50#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {50#true} is VALID [2020-07-08 17:38:24,333 INFO L280 TraceCheckUtils]: 11: Hoare triple {50#true} ~pvlen~0 := #t~nondet0; {50#true} is VALID [2020-07-08 17:38:24,333 INFO L280 TraceCheckUtils]: 12: Hoare triple {50#true} havoc #t~nondet0; {50#true} is VALID [2020-07-08 17:38:24,336 INFO L280 TraceCheckUtils]: 13: Hoare triple {50#true} assume !true; {51#false} is VALID [2020-07-08 17:38:24,336 INFO L280 TraceCheckUtils]: 14: Hoare triple {51#false} assume !(~i~0 > ~pvlen~0); {51#false} is VALID [2020-07-08 17:38:24,337 INFO L280 TraceCheckUtils]: 15: Hoare triple {51#false} ~i~0 := 0; {51#false} is VALID [2020-07-08 17:38:24,337 INFO L280 TraceCheckUtils]: 16: Hoare triple {51#false} assume !true; {51#false} is VALID [2020-07-08 17:38:24,338 INFO L280 TraceCheckUtils]: 17: Hoare triple {51#false} ~j~0 := 0; {51#false} is VALID [2020-07-08 17:38:24,338 INFO L280 TraceCheckUtils]: 18: Hoare triple {51#false} ~n~0 := ~i~0; {51#false} is VALID [2020-07-08 17:38:24,339 INFO L280 TraceCheckUtils]: 19: Hoare triple {51#false} assume !false; {51#false} is VALID [2020-07-08 17:38:24,339 INFO L263 TraceCheckUtils]: 20: Hoare triple {51#false} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {51#false} is VALID [2020-07-08 17:38:24,340 INFO L280 TraceCheckUtils]: 21: Hoare triple {51#false} ~cond := #in~cond; {51#false} is VALID [2020-07-08 17:38:24,340 INFO L280 TraceCheckUtils]: 22: Hoare triple {51#false} assume 0 == ~cond; {51#false} is VALID [2020-07-08 17:38:24,340 INFO L280 TraceCheckUtils]: 23: Hoare triple {51#false} assume !false; {51#false} is VALID [2020-07-08 17:38:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:38:24,346 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:38:24,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672449556] [2020-07-08 17:38:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:38:24,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 17:38:24,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868142314] [2020-07-08 17:38:24,363 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-08 17:38:24,369 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:38:24,373 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 17:38:24,455 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:24,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 17:38:24,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:38:24,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 17:38:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 17:38:24,469 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-08 17:38:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:24,616 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-07-08 17:38:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 17:38:24,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-08 17:38:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:38:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:38:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2020-07-08 17:38:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 17:38:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2020-07-08 17:38:24,635 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 91 transitions. [2020-07-08 17:38:24,775 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:24,789 INFO L225 Difference]: With dead ends: 76 [2020-07-08 17:38:24,790 INFO L226 Difference]: Without dead ends: 42 [2020-07-08 17:38:24,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 17:38:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-08 17:38:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-08 17:38:24,862 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:38:24,863 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 42 states. [2020-07-08 17:38:24,865 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-08 17:38:24,865 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-08 17:38:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:24,873 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-08 17:38:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-07-08 17:38:24,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:24,875 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:24,875 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 42 states. [2020-07-08 17:38:24,875 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 42 states. [2020-07-08 17:38:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:24,882 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-08 17:38:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-07-08 17:38:24,883 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:24,883 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:24,884 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:38:24,884 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:38:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-08 17:38:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-07-08 17:38:24,890 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-07-08 17:38:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:38:24,890 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-07-08 17:38:24,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 17:38:24,891 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 42 states and 45 transitions. [2020-07-08 17:38:24,965 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-07-08 17:38:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-08 17:38:24,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:38:24,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:38:24,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 17:38:24,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:38:24,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:38:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2089093357, now seen corresponding path program 1 times [2020-07-08 17:38:24,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:38:24,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025279044] [2020-07-08 17:38:24,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:38:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:25,108 INFO L280 TraceCheckUtils]: 0: Hoare triple {376#true} assume true; {376#true} is VALID [2020-07-08 17:38:25,109 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {376#true} {376#true} #101#return; {376#true} is VALID [2020-07-08 17:38:25,109 INFO L263 TraceCheckUtils]: 0: Hoare triple {376#true} call ULTIMATE.init(); {376#true} is VALID [2020-07-08 17:38:25,109 INFO L280 TraceCheckUtils]: 1: Hoare triple {376#true} assume true; {376#true} is VALID [2020-07-08 17:38:25,110 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {376#true} {376#true} #101#return; {376#true} is VALID [2020-07-08 17:38:25,110 INFO L263 TraceCheckUtils]: 3: Hoare triple {376#true} call #t~ret3 := main(); {376#true} is VALID [2020-07-08 17:38:25,110 INFO L280 TraceCheckUtils]: 4: Hoare triple {376#true} havoc ~i~0; {376#true} is VALID [2020-07-08 17:38:25,111 INFO L280 TraceCheckUtils]: 5: Hoare triple {376#true} havoc ~pvlen~0; {376#true} is VALID [2020-07-08 17:38:25,111 INFO L280 TraceCheckUtils]: 6: Hoare triple {376#true} havoc ~tmp___1~0; {376#true} is VALID [2020-07-08 17:38:25,112 INFO L280 TraceCheckUtils]: 7: Hoare triple {376#true} ~k~0 := 0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,113 INFO L280 TraceCheckUtils]: 8: Hoare triple {380#(<= 0 main_~k~0)} havoc ~n~0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,114 INFO L280 TraceCheckUtils]: 9: Hoare triple {380#(<= 0 main_~k~0)} ~i~0 := 0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,115 INFO L280 TraceCheckUtils]: 10: Hoare triple {380#(<= 0 main_~k~0)} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,116 INFO L280 TraceCheckUtils]: 11: Hoare triple {380#(<= 0 main_~k~0)} ~pvlen~0 := #t~nondet0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,116 INFO L280 TraceCheckUtils]: 12: Hoare triple {380#(<= 0 main_~k~0)} havoc #t~nondet0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,117 INFO L280 TraceCheckUtils]: 13: Hoare triple {380#(<= 0 main_~k~0)} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,118 INFO L280 TraceCheckUtils]: 14: Hoare triple {380#(<= 0 main_~k~0)} assume !(0 != #t~nondet1 && ~i~0 <= 1000000); {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,119 INFO L280 TraceCheckUtils]: 15: Hoare triple {380#(<= 0 main_~k~0)} havoc #t~nondet1; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,119 INFO L280 TraceCheckUtils]: 16: Hoare triple {380#(<= 0 main_~k~0)} assume !(~i~0 > ~pvlen~0); {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,120 INFO L280 TraceCheckUtils]: 17: Hoare triple {380#(<= 0 main_~k~0)} ~i~0 := 0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,121 INFO L280 TraceCheckUtils]: 18: Hoare triple {380#(<= 0 main_~k~0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,122 INFO L280 TraceCheckUtils]: 19: Hoare triple {380#(<= 0 main_~k~0)} assume !(0 != #t~nondet2 && ~i~0 <= 1000000); {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,123 INFO L280 TraceCheckUtils]: 20: Hoare triple {380#(<= 0 main_~k~0)} havoc #t~nondet2; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,124 INFO L280 TraceCheckUtils]: 21: Hoare triple {380#(<= 0 main_~k~0)} ~j~0 := 0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,124 INFO L280 TraceCheckUtils]: 22: Hoare triple {380#(<= 0 main_~k~0)} ~n~0 := ~i~0; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,125 INFO L280 TraceCheckUtils]: 23: Hoare triple {380#(<= 0 main_~k~0)} assume !false; {380#(<= 0 main_~k~0)} is VALID [2020-07-08 17:38:25,127 INFO L263 TraceCheckUtils]: 24: Hoare triple {380#(<= 0 main_~k~0)} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {381#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 17:38:25,128 INFO L280 TraceCheckUtils]: 25: Hoare triple {381#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {382#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 17:38:25,128 INFO L280 TraceCheckUtils]: 26: Hoare triple {382#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {377#false} is VALID [2020-07-08 17:38:25,129 INFO L280 TraceCheckUtils]: 27: Hoare triple {377#false} assume !false; {377#false} is VALID [2020-07-08 17:38:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:38:25,133 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:38:25,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025279044] [2020-07-08 17:38:25,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:38:25,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 17:38:25,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321932598] [2020-07-08 17:38:25,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-07-08 17:38:25,136 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:38:25,136 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 17:38:25,170 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:25,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 17:38:25,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:38:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 17:38:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 17:38:25,172 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2020-07-08 17:38:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:25,400 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-07-08 17:38:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 17:38:25,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-07-08 17:38:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:38:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:38:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 54 transitions. [2020-07-08 17:38:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 17:38:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 54 transitions. [2020-07-08 17:38:25,407 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 54 transitions. [2020-07-08 17:38:25,479 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:25,482 INFO L225 Difference]: With dead ends: 51 [2020-07-08 17:38:25,482 INFO L226 Difference]: Without dead ends: 49 [2020-07-08 17:38:25,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 17:38:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-08 17:38:25,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-07-08 17:38:25,536 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:38:25,536 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand 48 states. [2020-07-08 17:38:25,536 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand 48 states. [2020-07-08 17:38:25,536 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 48 states. [2020-07-08 17:38:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:25,540 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-08 17:38:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-07-08 17:38:25,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:25,542 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:25,542 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 49 states. [2020-07-08 17:38:25,542 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 49 states. [2020-07-08 17:38:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:25,546 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-08 17:38:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-07-08 17:38:25,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:25,547 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:25,547 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:38:25,547 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:38:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-08 17:38:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-07-08 17:38:25,551 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-07-08 17:38:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:38:25,551 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-07-08 17:38:25,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 17:38:25,552 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 48 states and 51 transitions. [2020-07-08 17:38:25,612 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:25,612 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-07-08 17:38:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-08 17:38:25,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:38:25,614 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:38:25,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 17:38:25,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:38:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:38:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-07-08 17:38:25,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:38:25,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826030822] [2020-07-08 17:38:25,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:38:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:25,738 INFO L280 TraceCheckUtils]: 0: Hoare triple {683#true} assume true; {683#true} is VALID [2020-07-08 17:38:25,739 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {683#true} {683#true} #101#return; {683#true} is VALID [2020-07-08 17:38:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 17:38:25,748 INFO L280 TraceCheckUtils]: 0: Hoare triple {683#true} ~cond := #in~cond; {683#true} is VALID [2020-07-08 17:38:25,749 INFO L280 TraceCheckUtils]: 1: Hoare triple {683#true} assume !(0 == ~cond); {683#true} is VALID [2020-07-08 17:38:25,749 INFO L280 TraceCheckUtils]: 2: Hoare triple {683#true} assume true; {683#true} is VALID [2020-07-08 17:38:25,751 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {683#true} {689#(<= main_~n~0 main_~j~0)} #105#return; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,751 INFO L263 TraceCheckUtils]: 0: Hoare triple {683#true} call ULTIMATE.init(); {683#true} is VALID [2020-07-08 17:38:25,751 INFO L280 TraceCheckUtils]: 1: Hoare triple {683#true} assume true; {683#true} is VALID [2020-07-08 17:38:25,752 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {683#true} {683#true} #101#return; {683#true} is VALID [2020-07-08 17:38:25,752 INFO L263 TraceCheckUtils]: 3: Hoare triple {683#true} call #t~ret3 := main(); {683#true} is VALID [2020-07-08 17:38:25,752 INFO L280 TraceCheckUtils]: 4: Hoare triple {683#true} havoc ~i~0; {683#true} is VALID [2020-07-08 17:38:25,753 INFO L280 TraceCheckUtils]: 5: Hoare triple {683#true} havoc ~pvlen~0; {683#true} is VALID [2020-07-08 17:38:25,753 INFO L280 TraceCheckUtils]: 6: Hoare triple {683#true} havoc ~tmp___1~0; {683#true} is VALID [2020-07-08 17:38:25,753 INFO L280 TraceCheckUtils]: 7: Hoare triple {683#true} ~k~0 := 0; {683#true} is VALID [2020-07-08 17:38:25,754 INFO L280 TraceCheckUtils]: 8: Hoare triple {683#true} havoc ~n~0; {683#true} is VALID [2020-07-08 17:38:25,754 INFO L280 TraceCheckUtils]: 9: Hoare triple {683#true} ~i~0 := 0; {683#true} is VALID [2020-07-08 17:38:25,754 INFO L280 TraceCheckUtils]: 10: Hoare triple {683#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {683#true} is VALID [2020-07-08 17:38:25,755 INFO L280 TraceCheckUtils]: 11: Hoare triple {683#true} ~pvlen~0 := #t~nondet0; {683#true} is VALID [2020-07-08 17:38:25,755 INFO L280 TraceCheckUtils]: 12: Hoare triple {683#true} havoc #t~nondet0; {683#true} is VALID [2020-07-08 17:38:25,755 INFO L280 TraceCheckUtils]: 13: Hoare triple {683#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {683#true} is VALID [2020-07-08 17:38:25,755 INFO L280 TraceCheckUtils]: 14: Hoare triple {683#true} assume !(0 != #t~nondet1 && ~i~0 <= 1000000); {683#true} is VALID [2020-07-08 17:38:25,756 INFO L280 TraceCheckUtils]: 15: Hoare triple {683#true} havoc #t~nondet1; {683#true} is VALID [2020-07-08 17:38:25,756 INFO L280 TraceCheckUtils]: 16: Hoare triple {683#true} assume !(~i~0 > ~pvlen~0); {683#true} is VALID [2020-07-08 17:38:25,757 INFO L280 TraceCheckUtils]: 17: Hoare triple {683#true} ~i~0 := 0; {687#(<= main_~i~0 0)} is VALID [2020-07-08 17:38:25,758 INFO L280 TraceCheckUtils]: 18: Hoare triple {687#(<= main_~i~0 0)} assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647; {687#(<= main_~i~0 0)} is VALID [2020-07-08 17:38:25,759 INFO L280 TraceCheckUtils]: 19: Hoare triple {687#(<= main_~i~0 0)} assume !(0 != #t~nondet2 && ~i~0 <= 1000000); {687#(<= main_~i~0 0)} is VALID [2020-07-08 17:38:25,760 INFO L280 TraceCheckUtils]: 20: Hoare triple {687#(<= main_~i~0 0)} havoc #t~nondet2; {687#(<= main_~i~0 0)} is VALID [2020-07-08 17:38:25,761 INFO L280 TraceCheckUtils]: 21: Hoare triple {687#(<= main_~i~0 0)} ~j~0 := 0; {688#(<= main_~i~0 main_~j~0)} is VALID [2020-07-08 17:38:25,762 INFO L280 TraceCheckUtils]: 22: Hoare triple {688#(<= main_~i~0 main_~j~0)} ~n~0 := ~i~0; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,762 INFO L280 TraceCheckUtils]: 23: Hoare triple {689#(<= main_~n~0 main_~j~0)} assume !false; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,763 INFO L263 TraceCheckUtils]: 24: Hoare triple {689#(<= main_~n~0 main_~j~0)} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {683#true} is VALID [2020-07-08 17:38:25,763 INFO L280 TraceCheckUtils]: 25: Hoare triple {683#true} ~cond := #in~cond; {683#true} is VALID [2020-07-08 17:38:25,764 INFO L280 TraceCheckUtils]: 26: Hoare triple {683#true} assume !(0 == ~cond); {683#true} is VALID [2020-07-08 17:38:25,764 INFO L280 TraceCheckUtils]: 27: Hoare triple {683#true} assume true; {683#true} is VALID [2020-07-08 17:38:25,765 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {683#true} {689#(<= main_~n~0 main_~j~0)} #105#return; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,766 INFO L280 TraceCheckUtils]: 29: Hoare triple {689#(<= main_~n~0 main_~j~0)} ~k~0 := ~k~0 - 1; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,767 INFO L280 TraceCheckUtils]: 30: Hoare triple {689#(<= main_~n~0 main_~j~0)} ~i~0 := ~i~0 - 1; {689#(<= main_~n~0 main_~j~0)} is VALID [2020-07-08 17:38:25,768 INFO L280 TraceCheckUtils]: 31: Hoare triple {689#(<= main_~n~0 main_~j~0)} ~j~0 := 1 + ~j~0; {694#(<= (+ main_~n~0 1) main_~j~0)} is VALID [2020-07-08 17:38:25,769 INFO L280 TraceCheckUtils]: 32: Hoare triple {694#(<= (+ main_~n~0 1) main_~j~0)} assume !(~j~0 >= ~n~0); {684#false} is VALID [2020-07-08 17:38:25,770 INFO L280 TraceCheckUtils]: 33: Hoare triple {684#false} assume !false; {684#false} is VALID [2020-07-08 17:38:25,770 INFO L263 TraceCheckUtils]: 34: Hoare triple {684#false} call __VERIFIER_assert((if ~k~0 >= 0 then 1 else 0)); {684#false} is VALID [2020-07-08 17:38:25,770 INFO L280 TraceCheckUtils]: 35: Hoare triple {684#false} ~cond := #in~cond; {684#false} is VALID [2020-07-08 17:38:25,771 INFO L280 TraceCheckUtils]: 36: Hoare triple {684#false} assume 0 == ~cond; {684#false} is VALID [2020-07-08 17:38:25,771 INFO L280 TraceCheckUtils]: 37: Hoare triple {684#false} assume !false; {684#false} is VALID [2020-07-08 17:38:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 17:38:25,775 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 17:38:25,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826030822] [2020-07-08 17:38:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 17:38:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 17:38:25,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979583129] [2020-07-08 17:38:25,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 17:38:25,777 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 17:38:25,777 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 17:38:25,827 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:25,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 17:38:25,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 17:38:25,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 17:38:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-08 17:38:25,829 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-07-08 17:38:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:26,274 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-07-08 17:38:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 17:38:26,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-08 17:38:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 17:38:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 17:38:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2020-07-08 17:38:26,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 17:38:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2020-07-08 17:38:26,282 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 83 transitions. [2020-07-08 17:38:26,370 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 83 edges. 83 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:26,373 INFO L225 Difference]: With dead ends: 82 [2020-07-08 17:38:26,374 INFO L226 Difference]: Without dead ends: 61 [2020-07-08 17:38:26,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-07-08 17:38:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-08 17:38:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-07-08 17:38:26,430 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 17:38:26,430 INFO L82 GeneralOperation]: Start isEquivalent. First operand 61 states. Second operand 50 states. [2020-07-08 17:38:26,430 INFO L74 IsIncluded]: Start isIncluded. First operand 61 states. Second operand 50 states. [2020-07-08 17:38:26,430 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 50 states. [2020-07-08 17:38:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:26,435 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-07-08 17:38:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-07-08 17:38:26,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:26,436 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:26,436 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand 61 states. [2020-07-08 17:38:26,436 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 61 states. [2020-07-08 17:38:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 17:38:26,440 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-07-08 17:38:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-07-08 17:38:26,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 17:38:26,441 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 17:38:26,441 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 17:38:26,442 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 17:38:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-08 17:38:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-07-08 17:38:26,444 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-07-08 17:38:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 17:38:26,445 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-07-08 17:38:26,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 17:38:26,445 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 50 states and 53 transitions. [2020-07-08 17:38:26,511 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 17:38:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-07-08 17:38:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-08 17:38:26,512 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 17:38:26,513 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 17:38:26,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 17:38:26,513 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 17:38:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 17:38:26,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-07-08 17:38:26,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 17:38:26,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727190305] [2020-07-08 17:38:26,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 17:38:26,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-08 17:38:26,526 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 17:38:26,532 INFO L168 Benchmark]: Toolchain (without parser) took 3456.29 ms. Allocated memory was 136.3 MB in the beginning and 250.6 MB in the end (delta: 114.3 MB). Free memory was 101.6 MB in the beginning and 144.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,533 INFO L168 Benchmark]: CDTParser took 0.94 ms. Allocated memory is still 136.3 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.83 ms. Allocated memory is still 136.3 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,535 INFO L168 Benchmark]: Boogie Preprocessor took 127.80 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,535 INFO L168 Benchmark]: RCFGBuilder took 476.39 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 155.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,536 INFO L168 Benchmark]: TraceAbstraction took 2496.15 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 154.8 MB in the beginning and 144.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-07-08 17:38:26,540 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 0.94 ms. Allocated memory is still 136.3 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.83 ms. Allocated memory is still 136.3 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.80 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.39 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 155.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2496.15 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 154.8 MB in the beginning and 144.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...