/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 02:28:30,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 02:28:30,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 02:28:30,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 02:28:30,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 02:28:30,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 02:28:30,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 02:28:30,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 02:28:30,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 02:28:30,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 02:28:30,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 02:28:30,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 02:28:30,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 02:28:30,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 02:28:30,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 02:28:30,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 02:28:30,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 02:28:30,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 02:28:30,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 02:28:30,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 02:28:30,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 02:28:30,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 02:28:30,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 02:28:30,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 02:28:30,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 02:28:30,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 02:28:30,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 02:28:30,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 02:28:30,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 02:28:30,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 02:28:30,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 02:28:30,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 02:28:30,222 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 02:28:30,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 02:28:30,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 02:28:30,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 02:28:30,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 02:28:30,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 02:28:30,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 02:28:30,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 02:28:30,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 02:28:30,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 02:28:30,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 02:28:30,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 02:28:30,228 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 02:28:30,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 02:28:30,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 02:28:30,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:28:30,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 02:28:30,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 02:28:30,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 02:28:30,229 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 02:28:30,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 02:28:30,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 02:28:30,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 02:28:30,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 02:28:30,574 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 02:28:30,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-11 02:28:30,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77cd594d7/6342f903750f4b96a80dc1c4f2238953/FLAG0ebc1c4dd [2020-07-11 02:28:31,119 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 02:28:31,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-11 02:28:31,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77cd594d7/6342f903750f4b96a80dc1c4f2238953/FLAG0ebc1c4dd [2020-07-11 02:28:31,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77cd594d7/6342f903750f4b96a80dc1c4f2238953 [2020-07-11 02:28:31,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 02:28:31,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 02:28:31,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 02:28:31,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 02:28:31,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 02:28:31,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aacd162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31, skipping insertion in model container [2020-07-11 02:28:31,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 02:28:31,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 02:28:31,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:28:31,708 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 02:28:31,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 02:28:31,737 INFO L208 MainTranslator]: Completed translation [2020-07-11 02:28:31,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31 WrapperNode [2020-07-11 02:28:31,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 02:28:31,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 02:28:31,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 02:28:31,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 02:28:31,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... [2020-07-11 02:28:31,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 02:28:31,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 02:28:31,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 02:28:31,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 02:28:31,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 02:28:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 02:28:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 02:28:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-11 02:28:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-11 02:28:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 02:28:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 02:28:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-11 02:28:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-11 02:28:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 02:28:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 02:28:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 02:28:32,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 02:28:32,113 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-11 02:28:32,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:28:32 BoogieIcfgContainer [2020-07-11 02:28:32,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 02:28:32,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 02:28:32,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 02:28:32,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 02:28:32,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 02:28:31" (1/3) ... [2020-07-11 02:28:32,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef57f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:28:32, skipping insertion in model container [2020-07-11 02:28:32,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 02:28:31" (2/3) ... [2020-07-11 02:28:32,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef57f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 02:28:32, skipping insertion in model container [2020-07-11 02:28:32,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 02:28:32" (3/3) ... [2020-07-11 02:28:32,127 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-07-11 02:28:32,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 02:28:32,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 02:28:32,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 02:28:32,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 02:28:32,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 02:28:32,185 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 02:28:32,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 02:28:32,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 02:28:32,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 02:28:32,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 02:28:32,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 02:28:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-11 02:28:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-11 02:28:32,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:28:32,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:28:32,233 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:28:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:28:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times [2020-07-11 02:28:32,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:28:32,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502593025] [2020-07-11 02:28:32,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:28:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:32,464 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-11 02:28:32,465 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-11 02:28:32,465 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-11 02:28:32,468 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {32#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-11 02:28:32,468 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-11 02:28:32,469 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-11 02:28:32,469 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-11 02:28:32,469 INFO L263 TraceCheckUtils]: 4: Hoare triple {27#true} call #t~ret0 := main(); {27#true} is VALID [2020-07-11 02:28:32,472 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume false; {28#false} is VALID [2020-07-11 02:28:32,473 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#false} call __VERIFIER_assert((if 0 != ~x~0 then 1 else 0)); {28#false} is VALID [2020-07-11 02:28:32,473 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-11 02:28:32,474 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-11 02:28:32,474 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-11 02:28:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:28:32,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502593025] [2020-07-11 02:28:32,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:28:32,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-11 02:28:32,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909348974] [2020-07-11 02:28:32,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-11 02:28:32,488 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:28:32,491 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-11 02:28:32,526 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:32,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-11 02:28:32,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:28:32,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-11 02:28:32,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-11 02:28:32,538 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-11 02:28:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:32,704 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2020-07-11 02:28:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-11 02:28:32,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-11 02:28:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:28:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-11 02:28:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-11 02:28:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-11 02:28:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-11 02:28:32,724 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2020-07-11 02:28:32,827 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:32,839 INFO L225 Difference]: With dead ends: 39 [2020-07-11 02:28:32,839 INFO L226 Difference]: Without dead ends: 20 [2020-07-11 02:28:32,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-11 02:28:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-11 02:28:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-07-11 02:28:32,904 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:28:32,904 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 18 states. [2020-07-11 02:28:32,905 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 18 states. [2020-07-11 02:28:32,905 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 18 states. [2020-07-11 02:28:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:32,911 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-11 02:28:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-11 02:28:32,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:32,912 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:32,912 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 20 states. [2020-07-11 02:28:32,912 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 20 states. [2020-07-11 02:28:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:32,916 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-11 02:28:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-11 02:28:32,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:32,918 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:32,918 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:28:32,918 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:28:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-11 02:28:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-11 02:28:32,923 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-07-11 02:28:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:28:32,924 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-11 02:28:32,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-11 02:28:32,924 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2020-07-11 02:28:32,956 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-11 02:28:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-11 02:28:32,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 02:28:32,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 02:28:32,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 02:28:32,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 02:28:32,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 02:28:32,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times [2020-07-11 02:28:32,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 02:28:32,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367135244] [2020-07-11 02:28:32,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 02:28:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:33,067 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-11 02:28:33,067 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-11 02:28:33,068 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-11 02:28:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 02:28:33,081 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-11 02:28:33,082 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,083 INFO L280 TraceCheckUtils]: 2: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,084 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,086 INFO L263 TraceCheckUtils]: 0: Hoare triple {189#true} call ULTIMATE.init(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-11 02:28:33,086 INFO L280 TraceCheckUtils]: 1: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-11 02:28:33,086 INFO L280 TraceCheckUtils]: 2: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-11 02:28:33,087 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-11 02:28:33,087 INFO L263 TraceCheckUtils]: 4: Hoare triple {189#true} call #t~ret0 := main(); {189#true} is VALID [2020-07-11 02:28:33,087 INFO L280 TraceCheckUtils]: 5: Hoare triple {189#true} assume !false; {189#true} is VALID [2020-07-11 02:28:33,089 INFO L263 TraceCheckUtils]: 6: Hoare triple {189#true} call eval(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-11 02:28:33,089 INFO L280 TraceCheckUtils]: 7: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-11 02:28:33,090 INFO L280 TraceCheckUtils]: 8: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,091 INFO L280 TraceCheckUtils]: 9: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,092 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-11 02:28:33,094 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 [2020-07-11 02:28:33,095 INFO L280 TraceCheckUtils]: 12: Hoare triple {199#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {200#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-11 02:28:33,096 INFO L280 TraceCheckUtils]: 13: Hoare triple {200#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {190#false} is VALID [2020-07-11 02:28:33,096 INFO L280 TraceCheckUtils]: 14: Hoare triple {190#false} assume !false; {190#false} is VALID [2020-07-11 02:28:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 02:28:33,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367135244] [2020-07-11 02:28:33,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 02:28:33,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-11 02:28:33,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052598391] [2020-07-11 02:28:33,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-11 02:28:33,102 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 02:28:33,102 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-11 02:28:33,124 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:33,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-11 02:28:33,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 02:28:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-11 02:28:33,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-11 02:28:33,126 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-07-11 02:28:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:33,312 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-11 02:28:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-11 02:28:33,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-11 02:28:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 02:28:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-11 02:28:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-11 02:28:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-11 02:28:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-11 02:28:33,317 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 18 transitions. [2020-07-11 02:28:33,346 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:33,346 INFO L225 Difference]: With dead ends: 18 [2020-07-11 02:28:33,346 INFO L226 Difference]: Without dead ends: 0 [2020-07-11 02:28:33,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-11 02:28:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-11 02:28:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-11 02:28:33,349 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 02:28:33,349 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:33,349 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:33,349 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:33,350 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 02:28:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:33,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:33,350 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:33,350 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:33,351 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-11 02:28:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 02:28:33,351 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-11 02:28:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:33,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:33,352 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 02:28:33,352 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 02:28:33,352 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 02:28:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-11 02:28:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-11 02:28:33,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-11 02:28:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 02:28:33,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-11 02:28:33,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-11 02:28:33,353 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-11 02:28:33,353 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 02:28:33,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-11 02:28:33,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 02:28:33,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 02:28:33,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-11 02:28:33,622 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-11 02:28:33,622 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-11 02:28:33,622 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-11 02:28:33,623 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,623 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,623 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,623 INFO L264 CegarLoopResult]: At program point evalEXIT(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,624 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-11 02:28:33,624 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-11 02:28:33,624 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-11 02:28:33,624 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-11 02:28:33,624 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-11 02:28:33,624 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,625 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,625 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-11 02:28:33,625 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-11 02:28:33,625 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-11 02:28:33,625 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-11 02:28:33,626 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-11 02:28:33,626 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))) [2020-07-11 02:28:33,626 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-11 02:28:33,626 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))) [2020-07-11 02:28:33,627 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))) [2020-07-11 02:28:33,627 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))) [2020-07-11 02:28:33,647 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. [2020-07-11 02:28:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 02:28:33 BoogieIcfgContainer [2020-07-11 02:28:33,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 02:28:33,665 INFO L168 Benchmark]: Toolchain (without parser) took 2159.59 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 138.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,666 INFO L168 Benchmark]: CDTParser took 1.04 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.65 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,668 INFO L168 Benchmark]: Boogie Preprocessor took 114.23 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 182.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,669 INFO L168 Benchmark]: RCFGBuilder took 264.54 ms. Allocated memory is still 202.4 MB. Free memory was 182.2 MB in the beginning and 167.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,670 INFO L168 Benchmark]: TraceAbstraction took 1542.40 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 167.2 MB in the beginning and 138.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-07-11 02:28:33,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.65 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.23 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.3 MB in the beginning and 182.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.54 ms. Allocated memory is still 202.4 MB. Free memory was 182.2 MB in the beginning and 167.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1542.40 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 167.2 MB in the beginning and 138.4 MB in the end (delta: 28.9 MB). Peak memory consumption was 60.8 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 18 GetRequests, 10 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...