/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:28:27,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:28:27,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:28:27,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:28:27,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:28:27,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:28:27,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:28:27,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:28:27,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:28:27,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:28:27,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:28:27,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:28:27,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:28:27,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:28:27,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:28:27,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:28:27,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:28:27,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:28:27,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:28:27,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:28:27,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:28:27,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:28:27,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:28:27,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:28:27,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 02:28:27,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 02:28:27,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 02:28:27,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 02:28:27,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 02:28:27,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 02:28:27,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 02:28:27,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 02:28:27,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 02:28:27,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:28:27,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:28:27,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:28:27,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:28:27,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:28:27,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:28:27,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:28:27,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:28:27,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:28:27,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:28:27,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:28:27,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:28:27,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:28:27,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:28:27,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:28:27,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:28:27,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:28:27,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:28:27,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:28:27,191 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:28:27,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:28:27,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:28:27,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:28:27,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:28:27,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:28:27,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:28:27,193 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 02:28:27,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:28:27,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:28:27,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:28:27,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:28:27,624 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:28:27,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-07-11 02:28:27,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e4fcf2/a5b4d73979c64d1294aa64e31b8c091d/FLAG573d17053 [2020-07-11 02:28:28,344 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:28:28,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2020-07-11 02:28:28,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e4fcf2/a5b4d73979c64d1294aa64e31b8c091d/FLAG573d17053 [2020-07-11 02:28:28,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310e4fcf2/a5b4d73979c64d1294aa64e31b8c091d [2020-07-11 02:28:28,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:28:28,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:28:28,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:28:28,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:28:28,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:28:28,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:28:28" (1/1) ... [2020-07-11 02:28:28,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cb6dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:28, skipping insertion in model container [2020-07-11 02:28:28,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:28:28" (1/1) ... [2020-07-11 02:28:28,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:28:28,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:28:28,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:28:28,971 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:28:28,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:28:29,009 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:28:29,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29 WrapperNode [2020-07-11 02:28:29,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:28:29,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:28:29,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:28:29,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:28:29,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (1/1) ... [2020-07-11 02:28:29,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:28:29,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:28:29,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:28:29,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:28:29,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (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 [2020-07-11 02:28:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:28:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:28:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:28:29,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:28:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:28:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:28:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:28:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:28:29,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:28:29,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:28:29,479 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 02:28:29,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:28:29 BoogieIcfgContainer [2020-07-11 02:28:29,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:28:29,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:28:29,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:28:29,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:28:29,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:28:28" (1/3) ... [2020-07-11 02:28:29,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:28:29, skipping insertion in model container [2020-07-11 02:28:29,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:29" (2/3) ... [2020-07-11 02:28:29,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:28:29, skipping insertion in model container [2020-07-11 02:28:29,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:28:29" (3/3) ... [2020-07-11 02:28:29,521 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-07-11 02:28:29,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:28:29,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:28:29,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:28:29,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:28:29,614 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:28:29,614 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:28:29,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:28:29,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:28:29,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:28:29,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:28:29,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:28:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-11 02:28:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-11 02:28:29,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:28:29,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:28:29,641 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:28:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:28:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2020-07-11 02:28:29,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:28:29,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208871654] [2020-07-11 02:28:29,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:28:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:29,816 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-11 02:28:29,818 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2020-07-11 02:28:29,821 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {21#true} is VALID [2020-07-11 02:28:29,821 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-11 02:28:29,822 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2020-07-11 02:28:29,822 INFO L263 TraceCheckUtils]: 3: Hoare triple {21#true} call #t~ret0 := main(); {21#true} is VALID [2020-07-11 02:28:29,823 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#true} ~x~0 := 0; {21#true} is VALID [2020-07-11 02:28:29,824 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} assume !true; {22#false} is VALID [2020-07-11 02:28:29,824 INFO L263 TraceCheckUtils]: 6: Hoare triple {22#false} call __VERIFIER_assert((if 0 != ~x~0 then 1 else 0)); {22#false} is VALID [2020-07-11 02:28:29,825 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2020-07-11 02:28:29,825 INFO L280 TraceCheckUtils]: 8: Hoare triple {22#false} assume 0 == ~cond; {22#false} is VALID [2020-07-11 02:28:29,825 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-11 02:28:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:28:29,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208871654] [2020-07-11 02:28:29,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:28:29,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-11 02:28:29,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861395529] [2020-07-11 02:28:29,838 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-11 02:28:29,841 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:28:29,845 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-11 02:28:29,891 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:29,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-11 02:28:29,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:28:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-11 02:28:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-11 02:28:29,903 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-07-11 02:28:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,017 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-11 02:28:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-11 02:28:30,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-11 02:28:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:28:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:28:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2020-07-11 02:28:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-11 02:28:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2020-07-11 02:28:30,050 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 33 transitions. [2020-07-11 02:28:30,145 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:30,159 INFO L225 Difference]: With dead ends: 26 [2020-07-11 02:28:30,159 INFO L226 Difference]: Without dead ends: 13 [2020-07-11 02:28:30,165 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 [2020-07-11 02:28:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-11 02:28:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-11 02:28:30,222 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:28:30,223 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-11 02:28:30,223 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-11 02:28:30,224 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-11 02:28:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,228 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-11 02:28:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-11 02:28:30,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:30,230 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:30,230 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-11 02:28:30,230 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-11 02:28:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,235 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-11 02:28:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-11 02:28:30,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:30,236 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:30,236 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:28:30,236 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:28:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-11 02:28:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-11 02:28:30,241 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-07-11 02:28:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:28:30,242 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-11 02:28:30,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-11 02:28:30,242 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states and 13 transitions. [2020-07-11 02:28:30,284 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-11 02:28:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-11 02:28:30,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:28:30,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:28:30,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:28:30,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:28:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:28:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-07-11 02:28:30,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:28:30,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551714671] [2020-07-11 02:28:30,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:28:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:30,449 INFO L280 TraceCheckUtils]: 0: Hoare triple {131#true} assume true; {131#true} is VALID [2020-07-11 02:28:30,450 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {131#true} {131#true} #32#return; {131#true} is VALID [2020-07-11 02:28:30,450 INFO L263 TraceCheckUtils]: 0: Hoare triple {131#true} call ULTIMATE.init(); {131#true} is VALID [2020-07-11 02:28:30,451 INFO L280 TraceCheckUtils]: 1: Hoare triple {131#true} assume true; {131#true} is VALID [2020-07-11 02:28:30,451 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {131#true} {131#true} #32#return; {131#true} is VALID [2020-07-11 02:28:30,452 INFO L263 TraceCheckUtils]: 3: Hoare triple {131#true} call #t~ret0 := main(); {131#true} is VALID [2020-07-11 02:28:30,454 INFO L280 TraceCheckUtils]: 4: Hoare triple {131#true} ~x~0 := 0; {135#(= 0 main_~x~0)} is VALID [2020-07-11 02:28:30,455 INFO L280 TraceCheckUtils]: 5: Hoare triple {135#(= 0 main_~x~0)} assume !false; {135#(= 0 main_~x~0)} is VALID [2020-07-11 02:28:30,458 INFO L263 TraceCheckUtils]: 6: Hoare triple {135#(= 0 main_~x~0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {136#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-11 02:28:30,460 INFO L280 TraceCheckUtils]: 7: Hoare triple {136#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {137#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-11 02:28:30,461 INFO L280 TraceCheckUtils]: 8: Hoare triple {137#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {132#false} is VALID [2020-07-11 02:28:30,462 INFO L280 TraceCheckUtils]: 9: Hoare triple {132#false} assume !false; {132#false} is VALID [2020-07-11 02:28:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:28:30,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551714671] [2020-07-11 02:28:30,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:28:30,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-11 02:28:30,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28993889] [2020-07-11 02:28:30,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-11 02:28:30,468 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:28:30,469 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-11 02:28:30,487 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:30,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-11 02:28:30,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:28:30,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-11 02:28:30,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-11 02:28:30,490 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-07-11 02:28:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,608 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-07-11 02:28:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-11 02:28:30,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-11 02:28:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:28:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-11 02:28:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-07-11 02:28:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-11 02:28:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-07-11 02:28:30,615 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 13 transitions. [2020-07-11 02:28:30,641 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:30,642 INFO L225 Difference]: With dead ends: 13 [2020-07-11 02:28:30,642 INFO L226 Difference]: Without dead ends: 0 [2020-07-11 02:28:30,644 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 [2020-07-11 02:28:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-11 02:28:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-11 02:28:30,645 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:28:30,645 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:30,645 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:30,645 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,646 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 02:28:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:30,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:30,647 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:30,647 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:30,647 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:30,648 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 02:28:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:30,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:30,649 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:30,649 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:28:30,649 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:28:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-11 02:28:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-11 02:28:30,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-11 02:28:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:28:30,651 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-11 02:28:30,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-11 02:28:30,651 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-11 02:28:30,651 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:30,652 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:30,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:28:30,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-11 02:28:30,912 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-11 02:28:30,912 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-11 02:28:30,912 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-11 02:28:30,912 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-11 02:28:30,913 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-11 02:28:30,913 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-11 02:28:30,913 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2020-07-11 02:28:30,913 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 10 19) the Hoare annotation is: false [2020-07-11 02:28:30,914 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= 0 main_~x~0) [2020-07-11 02:28:30,914 INFO L264 CegarLoopResult]: At program point L15-1(lines 13 16) the Hoare annotation is: (= 0 main_~x~0) [2020-07-11 02:28:30,914 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 10 19) the Hoare annotation is: false [2020-07-11 02:28:30,914 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 16) the Hoare annotation is: false [2020-07-11 02:28:30,914 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-11 02:28:30,915 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-11 02:28:30,915 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-11 02:28:30,915 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-11 02:28:30,916 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-11 02:28:30,916 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-11 02:28:30,929 INFO L163 areAnnotationChecker]: CFG has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 02:28:30,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 02:28:30 BoogieIcfgContainer [2020-07-11 02:28:30,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 02:28:30,950 INFO L168 Benchmark]: Toolchain (without parser) took 2240.50 ms. Allocated memory was 138.9 MB in the beginning and 236.5 MB in the end (delta: 97.5 MB). Free memory was 103.2 MB in the beginning and 200.1 MB in the end (delta: -97.0 MB). Peak memory consumption was 565.3 kB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,952 INFO L168 Benchmark]: CDTParser took 1.69 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.12 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,954 INFO L168 Benchmark]: Boogie Preprocessor took 145.55 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.6 MB in the beginning and 182.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,955 INFO L168 Benchmark]: RCFGBuilder took 330.38 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 170.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,956 INFO L168 Benchmark]: TraceAbstraction took 1445.09 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.0 MB in the beginning and 200.1 MB in the end (delta: -30.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:30,961 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 1.69 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.12 ms. Allocated memory is still 138.9 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.55 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.6 MB in the beginning and 182.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.38 ms. Allocated memory is still 203.4 MB. Free memory was 182.7 MB in the beginning and 170.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1445.09 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 170.0 MB in the beginning and 200.1 MB in the end (delta: -30.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 == x - ProcedureContractResult [Line: 10]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 30 PreInvPairs, 34 NumberOfFragments, 47 HoareAnnotationTreeSize, 30 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...