/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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:48:11,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:48:11,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:48:11,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:48:11,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:48:11,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:48:11,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:48:11,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:48:11,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:48:11,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:48:11,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:48:11,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:48:11,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:48:11,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:48:11,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:48:11,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:48:11,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:48:11,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:48:11,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:48:11,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:48:11,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:48:11,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:48:11,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:48:11,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:48:11,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:48:11,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:48:11,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:48:11,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:48:11,910 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 00:48:11,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:48:11,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:48:11,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:48:11,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:48:11,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:48:11,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:48:11,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:48:11,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:48:11,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:48:11,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:48:11,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:48:11,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:48:11,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:48:11,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:48:11,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:48:11,923 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:48:11,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:48:11,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:48:11,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:48:11,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:48:11,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:48:11,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:48:11,924 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:48:12,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:48:12,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:48:12,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:48:12,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:48:12,253 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:48:12,254 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-18 00:48:12,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019f5b0e/b02937214b8e43ca88cc234450a71f37/FLAGdaca8d67d [2020-07-18 00:48:12,752 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:48:12,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-18 00:48:12,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019f5b0e/b02937214b8e43ca88cc234450a71f37/FLAGdaca8d67d [2020-07-18 00:48:13,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019f5b0e/b02937214b8e43ca88cc234450a71f37 [2020-07-18 00:48:13,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:48:13,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:48:13,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:13,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:48:13,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:48:13,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f736972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13, skipping insertion in model container [2020-07-18 00:48:13,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:48:13,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:48:13,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:13,402 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:48:13,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:48:13,432 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:48:13,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13 WrapperNode [2020-07-18 00:48:13,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:48:13,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:48:13,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:48:13,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:48:13,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (1/1) ... [2020-07-18 00:48:13,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:48:13,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:48:13,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:48:13,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:48:13,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (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 00:48:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:48:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:48:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:48:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-18 00:48:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:48:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:48:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:48:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-18 00:48:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:48:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:48:13,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:48:13,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:48:13,808 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 00:48:13,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:13 BoogieIcfgContainer [2020-07-18 00:48:13,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:48:13,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:48:13,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:48:13,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:48:13,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:48:13" (1/3) ... [2020-07-18 00:48:13,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67cc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:13, skipping insertion in model container [2020-07-18 00:48:13,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:48:13" (2/3) ... [2020-07-18 00:48:13,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a67cc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:48:13, skipping insertion in model container [2020-07-18 00:48:13,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:48:13" (3/3) ... [2020-07-18 00:48:13,821 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-07-18 00:48:13,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:48:13,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:48:13,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:48:13,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:48:13,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:48:13,887 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:48:13,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:48:13,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:48:13,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:48:13,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:48:13,888 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:48:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-18 00:48:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-18 00:48:13,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:13,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:13,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:13,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times [2020-07-18 00:48:13,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:13,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305329906] [2020-07-18 00:48:13,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:14,129 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-18 00:48:14,130 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-18 00:48:14,130 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-18 00:48:14,134 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {32#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-18 00:48:14,134 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-18 00:48:14,135 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-18 00:48:14,135 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-18 00:48:14,135 INFO L263 TraceCheckUtils]: 4: Hoare triple {27#true} call #t~ret0 := main(); {27#true} is VALID [2020-07-18 00:48:14,137 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume false; {28#false} is VALID [2020-07-18 00:48:14,137 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#false} call __VERIFIER_assert((if 0 != ~x~0 then 1 else 0)); {28#false} is VALID [2020-07-18 00:48:14,138 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-18 00:48:14,138 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-18 00:48:14,138 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-18 00:48:14,139 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 00:48:14,142 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:14,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305329906] [2020-07-18 00:48:14,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:14,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:48:14,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698575728] [2020-07-18 00:48:14,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-18 00:48:14,156 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:14,160 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:48:14,184 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:14,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:48:14,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:48:14,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:48:14,197 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-18 00:48:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:14,403 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2020-07-18 00:48:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:48:14,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-18 00:48:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:48:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-18 00:48:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:48:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-18 00:48:14,422 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2020-07-18 00:48:14,540 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:14,557 INFO L225 Difference]: With dead ends: 39 [2020-07-18 00:48:14,558 INFO L226 Difference]: Without dead ends: 20 [2020-07-18 00:48:14,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:48:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-18 00:48:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-07-18 00:48:14,636 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:14,636 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 18 states. [2020-07-18 00:48:14,637 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 18 states. [2020-07-18 00:48:14,638 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 18 states. [2020-07-18 00:48:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:14,642 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-18 00:48:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-18 00:48:14,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:14,643 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:14,644 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 20 states. [2020-07-18 00:48:14,644 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 20 states. [2020-07-18 00:48:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:14,647 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-18 00:48:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-18 00:48:14,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:14,649 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:14,649 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:14,649 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-18 00:48:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-18 00:48:14,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-07-18 00:48:14,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:14,654 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-18 00:48:14,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:48:14,654 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2020-07-18 00:48:14,687 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-18 00:48:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-18 00:48:14,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:48:14,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:48:14,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:48:14,689 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:48:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:48:14,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times [2020-07-18 00:48:14,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:48:14,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201957487] [2020-07-18 00:48:14,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:48:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:14,803 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-18 00:48:14,804 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-18 00:48:14,804 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-18 00:48:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:48:14,816 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-18 00:48:14,821 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,822 INFO L280 TraceCheckUtils]: 2: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,823 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,824 INFO L263 TraceCheckUtils]: 0: Hoare triple {189#true} call ULTIMATE.init(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-18 00:48:14,825 INFO L280 TraceCheckUtils]: 1: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-18 00:48:14,825 INFO L280 TraceCheckUtils]: 2: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-18 00:48:14,825 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-18 00:48:14,826 INFO L263 TraceCheckUtils]: 4: Hoare triple {189#true} call #t~ret0 := main(); {189#true} is VALID [2020-07-18 00:48:14,826 INFO L280 TraceCheckUtils]: 5: Hoare triple {189#true} assume !false; {189#true} is VALID [2020-07-18 00:48:14,827 INFO L263 TraceCheckUtils]: 6: Hoare triple {189#true} call eval(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-18 00:48:14,828 INFO L280 TraceCheckUtils]: 7: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-18 00:48:14,829 INFO L280 TraceCheckUtils]: 8: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,830 INFO L280 TraceCheckUtils]: 9: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,831 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-18 00:48:14,833 INFO L263 TraceCheckUtils]: 11: Hoare triple {198#(= 0 ~x~0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {199#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-18 00:48:14,834 INFO L280 TraceCheckUtils]: 12: Hoare triple {199#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {200#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-18 00:48:14,835 INFO L280 TraceCheckUtils]: 13: Hoare triple {200#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {190#false} is VALID [2020-07-18 00:48:14,836 INFO L280 TraceCheckUtils]: 14: Hoare triple {190#false} assume !false; {190#false} is VALID [2020-07-18 00:48:14,837 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 00:48:14,838 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:48:14,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201957487] [2020-07-18 00:48:14,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:48:14,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-18 00:48:14,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23058287] [2020-07-18 00:48:14,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-18 00:48:14,841 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:48:14,841 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-18 00:48:14,865 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:14,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-18 00:48:14,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:48:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-18 00:48:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:48:14,866 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-07-18 00:48:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:15,058 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-18 00:48:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-18 00:48:15,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-18 00:48:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:48:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:48:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-18 00:48:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-18 00:48:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-18 00:48:15,063 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 18 transitions. [2020-07-18 00:48:15,088 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:15,088 INFO L225 Difference]: With dead ends: 18 [2020-07-18 00:48:15,089 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 00:48:15,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-18 00:48:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 00:48:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 00:48:15,091 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:48:15,091 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 00:48:15,092 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:48:15,092 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:48:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:15,092 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:48:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:48:15,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:15,093 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:15,093 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 00:48:15,093 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 00:48:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:48:15,094 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 00:48:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:48:15,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:15,094 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:48:15,094 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:48:15,095 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:48:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 00:48:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 00:48:15,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-18 00:48:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:48:15,096 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 00:48:15,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-18 00:48:15,096 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 00:48:15,096 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:48:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 00:48:15,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:48:15,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:48:15,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 00:48:15,377 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-18 00:48:15,377 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-18 00:48:15,378 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-18 00:48:15,378 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,378 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,378 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,378 INFO L264 CegarLoopResult]: At program point evalEXIT(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,379 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-18 00:48:15,379 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-18 00:48:15,379 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 00:48:15,379 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-18 00:48:15,379 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-18 00:48:15,380 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,380 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,380 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-18 00:48:15,380 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-18 00:48:15,380 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-18 00:48:15,381 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-18 00:48:15,381 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-18 00:48:15,381 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 00:48:15,381 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-18 00:48:15,382 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 00:48:15,382 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-18 00:48:15,382 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-18 00:48:15,401 INFO L163 areAnnotationChecker]: CFG has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 00:48:15,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:48:15 BoogieIcfgContainer [2020-07-18 00:48:15,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:48:15,419 INFO L168 Benchmark]: Toolchain (without parser) took 2247.68 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 102.1 MB in the beginning and 135.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,420 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 143.7 MB. Free memory was 101.7 MB in the beginning and 92.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,423 INFO L168 Benchmark]: Boogie Preprocessor took 115.35 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,424 INFO L168 Benchmark]: RCFGBuilder took 263.11 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 165.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,425 INFO L168 Benchmark]: TraceAbstraction took 1601.89 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 165.5 MB in the beginning and 135.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:48:15,429 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 0.16 ms. Allocated memory is still 143.7 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.78 ms. Allocated memory is still 143.7 MB. Free memory was 101.7 MB in the beginning and 92.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.35 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 92.2 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.11 ms. Allocated memory is still 200.8 MB. Free memory was 179.9 MB in the beginning and 165.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1601.89 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 165.5 MB in the beginning and 135.4 MB in the end (delta: 30.1 MB). Peak memory consumption was 60.0 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 - ProcedureContractResult [Line: 12]: Procedure Contract for eval Derived contract for procedure eval: !(0 == \old(x)) || 0 == x - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: !(0 == \old(x)) - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (0 == \old(cond) || !(0 == x)) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 26 SDslu, 28 SDs, 0 SdLazy, 14 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 40 PreInvPairs, 47 NumberOfFragments, 140 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 79 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, 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 proved your program to be correct! Received shutdown request...