/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-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:50:36,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:50:36,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:50:36,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:50:36,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:50:36,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:50:36,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:50:36,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:50:36,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:50:36,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:50:36,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:50:36,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:50:36,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:50:36,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:50:36,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:50:36,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:50:36,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:50:36,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:50:36,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:50:36,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:50:36,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:50:36,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:50:36,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:50:36,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:50:36,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:50:36,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:50:36,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:50:36,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:50:36,754 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 00:50:36,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:50:36,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:50:36,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:50:36,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:50:36,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:50:36,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:50:36,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:50:36,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:50:36,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:50:36,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:50:36,766 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:50:36,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:50:36,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:50:36,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:50:36,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:50:36,767 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:50:36,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:50:36,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:50:36,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:50:36,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:50:36,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:50:36,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:50:36,769 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:50:37,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:50:37,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:50:37,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:50:37,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:50:37,123 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:50:37,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-18 00:50:37,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b4e2f35/39665a86356e4f7fb4671527dc05b775/FLAGd59960933 [2020-07-18 00:50:37,583 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:50:37,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1.c [2020-07-18 00:50:37,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b4e2f35/39665a86356e4f7fb4671527dc05b775/FLAGd59960933 [2020-07-18 00:50:38,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b4e2f35/39665a86356e4f7fb4671527dc05b775 [2020-07-18 00:50:38,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:50:38,018 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:50:38,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:38,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:50:38,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:50:38,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6b7346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38, skipping insertion in model container [2020-07-18 00:50:38,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:50:38,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:50:38,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:38,281 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:50:38,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:38,322 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:50:38,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38 WrapperNode [2020-07-18 00:50:38,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:38,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:50:38,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:50:38,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:50:38,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (1/1) ... [2020-07-18 00:50:38,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:50:38,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:50:38,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:50:38,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:50:38,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (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 00:50:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:50:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:50:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:50:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:50:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:50:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 00:50:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:50:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:50:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:50:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:50:38,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:50:38,847 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:50:38,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:38 BoogieIcfgContainer [2020-07-18 00:50:38,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:50:38,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:50:38,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:50:38,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:50:38,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:50:38" (1/3) ... [2020-07-18 00:50:38,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e716f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:38, skipping insertion in model container [2020-07-18 00:50:38,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:38" (2/3) ... [2020-07-18 00:50:38,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e716f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:38, skipping insertion in model container [2020-07-18 00:50:38,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:38" (3/3) ... [2020-07-18 00:50:38,857 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-07-18 00:50:38,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:50:38,874 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:50:38,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:50:38,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:50:38,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:50:38,906 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:50:38,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:50:38,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:50:38,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:50:38,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:50:38,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:50:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-18 00:50:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-18 00:50:38,931 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:38,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:38,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash 635191250, now seen corresponding path program 1 times [2020-07-18 00:50:38,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:38,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496438063] [2020-07-18 00:50:38,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:39,063 INFO L280 TraceCheckUtils]: 0: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-18 00:50:39,063 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {43#true} {43#true} #59#return; {43#true} is VALID [2020-07-18 00:50:39,065 INFO L263 TraceCheckUtils]: 0: Hoare triple {43#true} call ULTIMATE.init(); {43#true} is VALID [2020-07-18 00:50:39,065 INFO L280 TraceCheckUtils]: 1: Hoare triple {43#true} assume true; {43#true} is VALID [2020-07-18 00:50:39,066 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {43#true} {43#true} #59#return; {43#true} is VALID [2020-07-18 00:50:39,066 INFO L263 TraceCheckUtils]: 3: Hoare triple {43#true} call #t~ret8 := main(); {43#true} is VALID [2020-07-18 00:50:39,066 INFO L280 TraceCheckUtils]: 4: Hoare triple {43#true} ~w~0 := #t~nondet0; {43#true} is VALID [2020-07-18 00:50:39,067 INFO L280 TraceCheckUtils]: 5: Hoare triple {43#true} havoc #t~nondet0; {43#true} is VALID [2020-07-18 00:50:39,067 INFO L280 TraceCheckUtils]: 6: Hoare triple {43#true} ~x~0 := ~w~0; {43#true} is VALID [2020-07-18 00:50:39,067 INFO L280 TraceCheckUtils]: 7: Hoare triple {43#true} ~y~0 := #t~nondet1; {43#true} is VALID [2020-07-18 00:50:39,068 INFO L280 TraceCheckUtils]: 8: Hoare triple {43#true} havoc #t~nondet1; {43#true} is VALID [2020-07-18 00:50:39,068 INFO L280 TraceCheckUtils]: 9: Hoare triple {43#true} ~z~0 := ~y~0; {43#true} is VALID [2020-07-18 00:50:39,069 INFO L280 TraceCheckUtils]: 10: Hoare triple {43#true} assume !true; {44#false} is VALID [2020-07-18 00:50:39,069 INFO L263 TraceCheckUtils]: 11: Hoare triple {44#false} call __VERIFIER_assert((if ~w~0 % 4294967296 == ~x~0 % 4294967296 && ~y~0 % 4294967296 == ~z~0 % 4294967296 then 1 else 0)); {44#false} is VALID [2020-07-18 00:50:39,070 INFO L280 TraceCheckUtils]: 12: Hoare triple {44#false} ~cond := #in~cond; {44#false} is VALID [2020-07-18 00:50:39,070 INFO L280 TraceCheckUtils]: 13: Hoare triple {44#false} assume 0 == ~cond; {44#false} is VALID [2020-07-18 00:50:39,070 INFO L280 TraceCheckUtils]: 14: Hoare triple {44#false} assume !false; {44#false} is VALID [2020-07-18 00:50:39,072 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 00:50:39,074 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:39,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496438063] [2020-07-18 00:50:39,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:50:39,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:50:39,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603345294] [2020-07-18 00:50:39,082 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-18 00:50:39,085 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:50:39,089 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:50:39,138 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:39,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:50:39,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:50:39,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:50:39,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:50:39,150 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-18 00:50:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:39,262 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-07-18 00:50:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:50:39,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-18 00:50:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:50:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-18 00:50:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2020-07-18 00:50:39,280 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 56 transitions. [2020-07-18 00:50:39,380 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:39,393 INFO L225 Difference]: With dead ends: 52 [2020-07-18 00:50:39,393 INFO L226 Difference]: Without dead ends: 33 [2020-07-18 00:50:39,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:50:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-18 00:50:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-18 00:50:39,453 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:50:39,454 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand 33 states. [2020-07-18 00:50:39,454 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 00:50:39,455 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 00:50:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:39,459 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 00:50:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:50:39,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:39,461 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:39,461 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand 33 states. [2020-07-18 00:50:39,461 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 33 states. [2020-07-18 00:50:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:39,466 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-18 00:50:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:50:39,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:39,467 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:39,467 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:50:39,467 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:50:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-18 00:50:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-18 00:50:39,472 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 15 [2020-07-18 00:50:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:50:39,473 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-18 00:50:39,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:50:39,473 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 33 states and 34 transitions. [2020-07-18 00:50:39,522 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 00:50:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-18 00:50:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-18 00:50:39,523 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:39,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:39,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:50:39,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1725587167, now seen corresponding path program 1 times [2020-07-18 00:50:39,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:39,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769300579] [2020-07-18 00:50:39,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:39,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:50:39,604 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:283) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:50:39,610 INFO L168 Benchmark]: Toolchain (without parser) took 1593.48 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 103.2 MB in the beginning and 101.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,611 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.89 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,613 INFO L168 Benchmark]: Boogie Preprocessor took 124.90 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 92.7 MB in the beginning and 177.9 MB in the end (delta: -85.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,614 INFO L168 Benchmark]: RCFGBuilder took 401.43 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 160.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,615 INFO L168 Benchmark]: TraceAbstraction took 756.28 ms. Allocated memory is still 199.8 MB. Free memory was 160.2 MB in the beginning and 101.0 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:39,619 INFO L336 ainManager$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 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.89 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.90 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 92.7 MB in the beginning and 177.9 MB in the end (delta: -85.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.43 ms. Allocated memory is still 199.8 MB. Free memory was 177.9 MB in the beginning and 160.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 756.28 ms. Allocated memory is still 199.8 MB. Free memory was 160.2 MB in the beginning and 101.0 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...