/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/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:50:48,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:50:48,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:50:48,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:50:48,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:50:48,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:50:48,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:50:48,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:50:48,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:50:48,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:50:48,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:50:48,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:50:48,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:50:48,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:50:48,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:50:48,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:50:48,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:50:48,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:50:48,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:50:48,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:50:48,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:50:48,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:50:48,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:50:48,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:50:48,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:50:48,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:50:48,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:50:48,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:50:48,882 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 00:50:48,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:50:48,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:50:48,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:50:48,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:50:48,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:50:48,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:50:48,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:50:48,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:50:48,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:50:48,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:50:48,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:50:48,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:50:48,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:50:48,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:50:48,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:50:48,895 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:50:48,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:50:48,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:50:48,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:50:48,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:50:48,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:50:48,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:50:48,897 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:50:49,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:50:49,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:50:49,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:50:49,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:50:49,202 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:50:49,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2020-07-18 00:50:49,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71a6923d/66b7cf5d020644cab467b1964bb3a4c3/FLAGa6fdc3810 [2020-07-18 00:50:49,671 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:50:49,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2020-07-18 00:50:49,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71a6923d/66b7cf5d020644cab467b1964bb3a4c3/FLAGa6fdc3810 [2020-07-18 00:50:50,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71a6923d/66b7cf5d020644cab467b1964bb3a4c3 [2020-07-18 00:50:50,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:50:50,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:50:50,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:50,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:50:50,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:50:50,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1cf721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50, skipping insertion in model container [2020-07-18 00:50:50,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:50:50,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:50:50,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:50,277 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:50:50,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:50,313 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:50:50,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50 WrapperNode [2020-07-18 00:50:50,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:50,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:50:50,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:50:50,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:50:50,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (1/1) ... [2020-07-18 00:50:50,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:50:50,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:50:50,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:50:50,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:50:50,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (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 00:50:50,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:50:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:50:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:50:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:50:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:50:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:50:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:50:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:50:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:50:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:50:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:50:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:50:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:50:50,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:50:50,791 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:50:50,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:50 BoogieIcfgContainer [2020-07-18 00:50:50,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:50:50,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:50:50,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:50:50,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:50:50,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:50:50" (1/3) ... [2020-07-18 00:50:50,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e438cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:50, skipping insertion in model container [2020-07-18 00:50:50,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:50" (2/3) ... [2020-07-18 00:50:50,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e438cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:50, skipping insertion in model container [2020-07-18 00:50:50,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:50" (3/3) ... [2020-07-18 00:50:50,803 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2020-07-18 00:50:50,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:50:50,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:50:50,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:50:50,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:50:50,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:50:50,858 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:50:50,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:50:50,858 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:50:50,858 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:50:50,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:50:50,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:50:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-18 00:50:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-18 00:50:50,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:50,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:50,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash 37246768, now seen corresponding path program 1 times [2020-07-18 00:50:50,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:50,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952716017] [2020-07-18 00:50:50,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:51,090 INFO L280 TraceCheckUtils]: 0: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-18 00:50:51,090 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {39#true} {39#true} #63#return; {39#true} is VALID [2020-07-18 00:50:51,093 INFO L263 TraceCheckUtils]: 0: Hoare triple {39#true} call ULTIMATE.init(); {39#true} is VALID [2020-07-18 00:50:51,094 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-18 00:50:51,095 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {39#true} {39#true} #63#return; {39#true} is VALID [2020-07-18 00:50:51,095 INFO L263 TraceCheckUtils]: 3: Hoare triple {39#true} call #t~ret1 := main(); {39#true} is VALID [2020-07-18 00:50:51,095 INFO L280 TraceCheckUtils]: 4: Hoare triple {39#true} havoc ~n~0; {39#true} is VALID [2020-07-18 00:50:51,096 INFO L280 TraceCheckUtils]: 5: Hoare triple {39#true} havoc ~a~0; {39#true} is VALID [2020-07-18 00:50:51,096 INFO L280 TraceCheckUtils]: 6: Hoare triple {39#true} havoc ~s~0; {39#true} is VALID [2020-07-18 00:50:51,097 INFO L280 TraceCheckUtils]: 7: Hoare triple {39#true} havoc ~t~0; {39#true} is VALID [2020-07-18 00:50:51,097 INFO L280 TraceCheckUtils]: 8: Hoare triple {39#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {39#true} is VALID [2020-07-18 00:50:51,099 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#true} ~n~0 := #t~nondet0; {39#true} is VALID [2020-07-18 00:50:51,099 INFO L280 TraceCheckUtils]: 10: Hoare triple {39#true} havoc #t~nondet0; {39#true} is VALID [2020-07-18 00:50:51,100 INFO L280 TraceCheckUtils]: 11: Hoare triple {39#true} ~a~0 := 0; {39#true} is VALID [2020-07-18 00:50:51,101 INFO L280 TraceCheckUtils]: 12: Hoare triple {39#true} ~s~0 := 1; {39#true} is VALID [2020-07-18 00:50:51,101 INFO L280 TraceCheckUtils]: 13: Hoare triple {39#true} ~t~0 := 1; {39#true} is VALID [2020-07-18 00:50:51,102 INFO L280 TraceCheckUtils]: 14: Hoare triple {39#true} assume !true; {40#false} is VALID [2020-07-18 00:50:51,103 INFO L263 TraceCheckUtils]: 15: Hoare triple {40#false} call __VERIFIER_assert((if ~t~0 == 1 + 2 * ~a~0 then 1 else 0)); {40#false} is VALID [2020-07-18 00:50:51,103 INFO L280 TraceCheckUtils]: 16: Hoare triple {40#false} ~cond := #in~cond; {40#false} is VALID [2020-07-18 00:50:51,104 INFO L280 TraceCheckUtils]: 17: Hoare triple {40#false} assume 0 == ~cond; {40#false} is VALID [2020-07-18 00:50:51,104 INFO L280 TraceCheckUtils]: 18: Hoare triple {40#false} assume !false; {40#false} is VALID [2020-07-18 00:50:51,107 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 00:50:51,113 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:51,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952716017] [2020-07-18 00:50:51,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:50:51,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:50:51,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79027955] [2020-07-18 00:50:51,126 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-18 00:50:51,132 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:50:51,135 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:50:51,176 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:51,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:50:51,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:50:51,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:50:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:50:51,189 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-18 00:50:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:51,328 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2020-07-18 00:50:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:50:51,328 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-18 00:50:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:50:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-18 00:50:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2020-07-18 00:50:51,350 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 80 transitions. [2020-07-18 00:50:51,484 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:51,497 INFO L225 Difference]: With dead ends: 58 [2020-07-18 00:50:51,498 INFO L226 Difference]: Without dead ends: 31 [2020-07-18 00:50:51,502 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 00:50:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-18 00:50:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-18 00:50:51,558 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:50:51,559 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:51,559 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:51,560 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:51,567 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-18 00:50:51,567 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-18 00:50:51,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:51,568 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:51,569 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:51,569 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:51,575 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-07-18 00:50:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-18 00:50:51,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:51,576 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:51,576 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:50:51,577 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:50:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-18 00:50:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-07-18 00:50:51,583 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 19 [2020-07-18 00:50:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:50:51,583 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-07-18 00:50:51,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:50:51,584 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 31 states and 36 transitions. [2020-07-18 00:50:51,638 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-07-18 00:50:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-18 00:50:51,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:51,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:51,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:50:51,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:51,641 INFO L82 PathProgramCache]: Analyzing trace with hash 25062249, now seen corresponding path program 1 times [2020-07-18 00:50:51,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:51,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649132163] [2020-07-18 00:50:51,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:51,824 INFO L280 TraceCheckUtils]: 0: Hoare triple {285#true} assume true; {285#true} is VALID [2020-07-18 00:50:51,824 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {285#true} {285#true} #63#return; {285#true} is VALID [2020-07-18 00:50:51,824 INFO L263 TraceCheckUtils]: 0: Hoare triple {285#true} call ULTIMATE.init(); {285#true} is VALID [2020-07-18 00:50:51,825 INFO L280 TraceCheckUtils]: 1: Hoare triple {285#true} assume true; {285#true} is VALID [2020-07-18 00:50:51,825 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {285#true} {285#true} #63#return; {285#true} is VALID [2020-07-18 00:50:51,825 INFO L263 TraceCheckUtils]: 3: Hoare triple {285#true} call #t~ret1 := main(); {285#true} is VALID [2020-07-18 00:50:51,826 INFO L280 TraceCheckUtils]: 4: Hoare triple {285#true} havoc ~n~0; {285#true} is VALID [2020-07-18 00:50:51,826 INFO L280 TraceCheckUtils]: 5: Hoare triple {285#true} havoc ~a~0; {285#true} is VALID [2020-07-18 00:50:51,826 INFO L280 TraceCheckUtils]: 6: Hoare triple {285#true} havoc ~s~0; {285#true} is VALID [2020-07-18 00:50:51,827 INFO L280 TraceCheckUtils]: 7: Hoare triple {285#true} havoc ~t~0; {285#true} is VALID [2020-07-18 00:50:51,827 INFO L280 TraceCheckUtils]: 8: Hoare triple {285#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {285#true} is VALID [2020-07-18 00:50:51,827 INFO L280 TraceCheckUtils]: 9: Hoare triple {285#true} ~n~0 := #t~nondet0; {285#true} is VALID [2020-07-18 00:50:51,828 INFO L280 TraceCheckUtils]: 10: Hoare triple {285#true} havoc #t~nondet0; {285#true} is VALID [2020-07-18 00:50:51,829 INFO L280 TraceCheckUtils]: 11: Hoare triple {285#true} ~a~0 := 0; {289#(and (<= main_~a~0 0) (<= 0 main_~a~0))} is VALID [2020-07-18 00:50:51,830 INFO L280 TraceCheckUtils]: 12: Hoare triple {289#(and (<= main_~a~0 0) (<= 0 main_~a~0))} ~s~0 := 1; {289#(and (<= main_~a~0 0) (<= 0 main_~a~0))} is VALID [2020-07-18 00:50:51,831 INFO L280 TraceCheckUtils]: 13: Hoare triple {289#(and (<= main_~a~0 0) (<= 0 main_~a~0))} ~t~0 := 1; {290#(and (<= main_~t~0 (+ (* 2 main_~a~0) 1)) (<= (+ (* 2 main_~a~0) 1) main_~t~0))} is VALID [2020-07-18 00:50:51,832 INFO L280 TraceCheckUtils]: 14: Hoare triple {290#(and (<= main_~t~0 (+ (* 2 main_~a~0) 1)) (<= (+ (* 2 main_~a~0) 1) main_~t~0))} assume !false; {290#(and (<= main_~t~0 (+ (* 2 main_~a~0) 1)) (<= (+ (* 2 main_~a~0) 1) main_~t~0))} is VALID [2020-07-18 00:50:51,834 INFO L263 TraceCheckUtils]: 15: Hoare triple {290#(and (<= main_~t~0 (+ (* 2 main_~a~0) 1)) (<= (+ (* 2 main_~a~0) 1) main_~t~0))} call __VERIFIER_assert((if ~t~0 == 1 + 2 * ~a~0 then 1 else 0)); {291#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 00:50:51,835 INFO L280 TraceCheckUtils]: 16: Hoare triple {291#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {292#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 00:50:51,835 INFO L280 TraceCheckUtils]: 17: Hoare triple {292#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {286#false} is VALID [2020-07-18 00:50:51,836 INFO L280 TraceCheckUtils]: 18: Hoare triple {286#false} assume !false; {286#false} is VALID [2020-07-18 00:50:51,839 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 00:50:51,839 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:51,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649132163] [2020-07-18 00:50:51,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:50:51,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 00:50:51,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831684706] [2020-07-18 00:50:51,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-18 00:50:51,841 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:50:51,842 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 00:50:51,866 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:51,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 00:50:51,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:50:51,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 00:50:51,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:50:51,867 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-07-18 00:50:52,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:52,240 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-07-18 00:50:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 00:50:52,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-18 00:50:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:50:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:50:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 56 transitions. [2020-07-18 00:50:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:50:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 56 transitions. [2020-07-18 00:50:52,249 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 56 transitions. [2020-07-18 00:50:52,324 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 00:50:52,327 INFO L225 Difference]: With dead ends: 46 [2020-07-18 00:50:52,327 INFO L226 Difference]: Without dead ends: 44 [2020-07-18 00:50:52,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-18 00:50:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-18 00:50:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-07-18 00:50:52,373 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:50:52,373 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 41 states. [2020-07-18 00:50:52,373 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 41 states. [2020-07-18 00:50:52,373 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 41 states. [2020-07-18 00:50:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:52,379 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-18 00:50:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-07-18 00:50:52,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:52,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:52,381 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 44 states. [2020-07-18 00:50:52,381 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 44 states. [2020-07-18 00:50:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:52,386 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-18 00:50:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-07-18 00:50:52,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:52,387 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:52,388 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:50:52,388 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:50:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-18 00:50:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-07-18 00:50:52,392 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 19 [2020-07-18 00:50:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:50:52,392 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-07-18 00:50:52,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 00:50:52,393 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 41 states and 50 transitions. [2020-07-18 00:50:52,476 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-07-18 00:50:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-18 00:50:52,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:52,478 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:52,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:50:52,480 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1680832565, now seen corresponding path program 1 times [2020-07-18 00:50:52,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:52,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747538304] [2020-07-18 00:50:52,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:52,504 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:52,505 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-18 00:50:52,505 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:50:52,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:50:52,523 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:50:52,524 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:50:52,524 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:50:52,524 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 00:50:52,524 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:50:52,524 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 00:50:52,525 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: L7-1 has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: L7-3 has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2020-07-18 00:50:52,526 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,527 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 00:50:52,528 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-18 00:50:52,529 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-18 00:50:52,530 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-18 00:50:52,530 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-18 00:50:52,530 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-18 00:50:52,533 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2020-07-18 00:50:52,534 WARN L170 areAnnotationChecker]: L26-3 has no Hoare annotation [2020-07-18 00:50:52,534 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-18 00:50:52,535 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:50:52,540 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-18 00:50:52,540 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-18 00:50:52,541 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:50:52,541 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:50:52,541 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-18 00:50:52,541 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 00:50:52,542 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2020-07-18 00:50:52,542 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2020-07-18 00:50:52,543 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2020-07-18 00:50:52,543 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-18 00:50:52,543 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:50:52,543 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:50:52,543 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:50:52,548 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-18 00:50:52,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:50:52 BoogieIcfgContainer [2020-07-18 00:50:52,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:50:52,553 INFO L168 Benchmark]: Toolchain (without parser) took 2484.80 ms. Allocated memory was 135.3 MB in the beginning and 226.5 MB in the end (delta: 91.2 MB). Free memory was 99.9 MB in the beginning and 89.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,554 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.83 ms. Allocated memory is still 135.3 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,556 INFO L168 Benchmark]: Boogie Preprocessor took 110.97 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 89.6 MB in the beginning and 177.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,559 INFO L168 Benchmark]: RCFGBuilder took 370.03 ms. Allocated memory is still 198.7 MB. Free memory was 177.8 MB in the beginning and 157.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,560 INFO L168 Benchmark]: TraceAbstraction took 1752.05 ms. Allocated memory was 198.7 MB in the beginning and 226.5 MB in the end (delta: 27.8 MB). Free memory was 157.4 MB in the beginning and 89.4 MB in the end (delta: 68.0 MB). Peak memory consumption was 95.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:52,574 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 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.83 ms. Allocated memory is still 135.3 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.97 ms. Allocated memory was 135.3 MB in the beginning and 198.7 MB in the end (delta: 63.4 MB). Free memory was 89.6 MB in the beginning and 177.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.03 ms. Allocated memory is still 198.7 MB. Free memory was 177.8 MB in the beginning and 157.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1752.05 ms. Allocated memory was 198.7 MB in the beginning and 226.5 MB in the end (delta: 27.8 MB). Free memory was 157.4 MB in the beginning and 89.4 MB in the end (delta: 68.0 MB). Peak memory consumption was 95.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int n, a, s, t; [L20] n = __VERIFIER_nondet_int() [L22] a = 0 [L23] s = 1 [L24] t = 1 [L26] COND TRUE 1 [L27] CALL __VERIFIER_assert(t == 2*a + 1) [L10] COND FALSE !(!(cond)) [L27] RET __VERIFIER_assert(t == 2*a + 1) [L28] CALL __VERIFIER_assert(s == (a + 1) * (a + 1)) [L10] COND TRUE !(cond) [L12] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 12 SDslu, 121 SDs, 0 SdLazy, 32 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...