/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 0.1.25-8fc6572 [2020-07-10 20:22:26,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:26,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:26,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:26,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:26,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:26,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:26,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:26,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:26,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:26,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:26,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:26,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:27,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:27,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:27,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:27,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:27,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:27,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:27,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:27,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:27,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:27,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:27,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:27,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 20:22:27,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 20:22:27,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 20:22:27,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 20:22:27,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 20:22:27,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 20:22:27,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 20:22:27,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 20:22:27,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 20:22:27,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 20:22:27,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 20:22:27,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 20:22:27,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 20:22:27,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 20:22:27,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:27,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:27,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:27,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:22:27,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:27,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:27,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:27,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:27,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:27,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:27,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:27,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:27,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:27,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:27,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:27,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:27,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:27,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:27,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:27,060 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:27,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:27,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:27,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:27,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:27,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:27,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:27,062 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:27,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:27,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:27,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:27,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:27,437 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:27,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-10 20:22:27,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aeb7027/deca4b7c317c4cc98871c4d992e729af/FLAG6d8bc5b58 [2020-07-10 20:22:27,994 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:27,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-10 20:22:28,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aeb7027/deca4b7c317c4cc98871c4d992e729af/FLAG6d8bc5b58 [2020-07-10 20:22:28,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aeb7027/deca4b7c317c4cc98871c4d992e729af [2020-07-10 20:22:28,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:28,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:28,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:28,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:28,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:28,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d819b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28, skipping insertion in model container [2020-07-10 20:22:28,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:28,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:28,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:28,580 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:28,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:28,610 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28 WrapperNode [2020-07-10 20:22:28,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:28,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:28,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:28,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:28,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:28,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:28,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:28,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:28,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (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 [2020-07-10 20:22:28,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:28,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:28,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:28,832 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-10 20:22:28,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-10 20:22:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:28,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:28,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:29,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:29,038 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-10 20:22:29,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:29 BoogieIcfgContainer [2020-07-10 20:22:29,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:29,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:29,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:29,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:29,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:28" (1/3) ... [2020-07-10 20:22:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d08b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:29, skipping insertion in model container [2020-07-10 20:22:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (2/3) ... [2020-07-10 20:22:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d08b716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:29, skipping insertion in model container [2020-07-10 20:22:29,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:29" (3/3) ... [2020-07-10 20:22:29,051 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-07-10 20:22:29,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:29,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:29,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:29,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:29,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:29,128 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:29,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:29,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:29,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:29,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:29,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-10 20:22:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 20:22:29,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:29,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:29,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:29,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times [2020-07-10 20:22:29,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:29,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156689132] [2020-07-10 20:22:29,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,390 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-10 20:22:29,390 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 20:22:29,391 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-10 20:22:29,396 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {32#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:29,396 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-10 20:22:29,396 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 20:22:29,397 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-10 20:22:29,397 INFO L263 TraceCheckUtils]: 4: Hoare triple {27#true} call #t~ret0 := main(); {27#true} is VALID [2020-07-10 20:22:29,401 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume false; {28#false} is VALID [2020-07-10 20:22:29,401 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#false} call __VERIFIER_assert((if 0 != ~x~0 then 1 else 0)); {28#false} is VALID [2020-07-10 20:22:29,402 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-10 20:22:29,402 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-10 20:22:29,402 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-10 20:22:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:29,404 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:29,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156689132] [2020-07-10 20:22:29,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:29,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-10 20:22:29,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831766519] [2020-07-10 20:22:29,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 20:22:29,418 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:29,422 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-10 20:22:29,454 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:29,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-10 20:22:29,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-10 20:22:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 20:22:29,464 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-10 20:22:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:29,636 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2020-07-10 20:22:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-10 20:22:29,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 20:22:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-10 20:22:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-10 20:22:29,654 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2020-07-10 20:22:29,757 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:29,770 INFO L225 Difference]: With dead ends: 39 [2020-07-10 20:22:29,770 INFO L226 Difference]: Without dead ends: 20 [2020-07-10 20:22:29,774 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 [2020-07-10 20:22:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-10 20:22:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-07-10 20:22:29,837 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:29,837 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:29,838 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:29,838 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:29,844 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-10 20:22:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-10 20:22:29,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:29,845 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:29,845 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 20 states. [2020-07-10 20:22:29,846 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 20 states. [2020-07-10 20:22:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:29,850 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-10 20:22:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-10 20:22:29,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:29,851 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:29,851 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:29,851 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-10 20:22:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-10 20:22:29,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-07-10 20:22:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:29,856 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-10 20:22:29,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-10 20:22:29,857 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2020-07-10 20:22:29,885 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-10 20:22:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-10 20:22:29,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:29,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:29,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:29,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times [2020-07-10 20:22:29,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:29,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300326342] [2020-07-10 20:22:29,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,998 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-10 20:22:29,999 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-10 20:22:29,999 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-10 20:22:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:30,011 INFO L280 TraceCheckUtils]: 0: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-10 20:22:30,013 INFO L280 TraceCheckUtils]: 1: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,014 INFO L280 TraceCheckUtils]: 2: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,015 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,016 INFO L263 TraceCheckUtils]: 0: Hoare triple {189#true} call ULTIMATE.init(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:30,017 INFO L280 TraceCheckUtils]: 1: Hoare triple {201#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {189#true} is VALID [2020-07-10 20:22:30,017 INFO L280 TraceCheckUtils]: 2: Hoare triple {189#true} assume true; {189#true} is VALID [2020-07-10 20:22:30,018 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {189#true} {189#true} #46#return; {189#true} is VALID [2020-07-10 20:22:30,018 INFO L263 TraceCheckUtils]: 4: Hoare triple {189#true} call #t~ret0 := main(); {189#true} is VALID [2020-07-10 20:22:30,018 INFO L280 TraceCheckUtils]: 5: Hoare triple {189#true} assume !false; {189#true} is VALID [2020-07-10 20:22:30,020 INFO L263 TraceCheckUtils]: 6: Hoare triple {189#true} call eval(); {201#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:30,020 INFO L280 TraceCheckUtils]: 7: Hoare triple {201#(= ~x~0 |old(~x~0)|)} assume !false; {189#true} is VALID [2020-07-10 20:22:30,021 INFO L280 TraceCheckUtils]: 8: Hoare triple {189#true} ~x~0 := 0; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,022 INFO L280 TraceCheckUtils]: 9: Hoare triple {198#(= 0 ~x~0)} assume true; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,023 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {198#(= 0 ~x~0)} {189#true} #50#return; {198#(= 0 ~x~0)} is VALID [2020-07-10 20:22:30,025 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 [2020-07-10 20:22:30,027 INFO L280 TraceCheckUtils]: 12: Hoare triple {199#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {200#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 20:22:30,028 INFO L280 TraceCheckUtils]: 13: Hoare triple {200#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {190#false} is VALID [2020-07-10 20:22:30,028 INFO L280 TraceCheckUtils]: 14: Hoare triple {190#false} assume !false; {190#false} is VALID [2020-07-10 20:22:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:30,030 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:30,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300326342] [2020-07-10 20:22:30,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:30,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 20:22:30,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925221205] [2020-07-10 20:22:30,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-10 20:22:30,044 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:30,044 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 20:22:30,066 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:30,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 20:22:30,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 20:22:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 20:22:30,067 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-07-10 20:22:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,251 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-10 20:22:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 20:22:30,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-10 20:22:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 20:22:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-10 20:22:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 20:22:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2020-07-10 20:22:30,257 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 18 transitions. [2020-07-10 20:22:30,282 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:30,283 INFO L225 Difference]: With dead ends: 18 [2020-07-10 20:22:30,283 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 20:22:30,285 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 [2020-07-10 20:22:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 20:22:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 20:22:30,285 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:30,286 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:30,286 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:30,286 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,287 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:30,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:30,287 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:30,287 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:30,288 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,288 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:30,288 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:30,289 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:30,289 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:30,289 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 20:22:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 20:22:30,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-10 20:22:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:30,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 20:22:30,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 20:22:30,290 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-10 20:22:30,290 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:30,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:30,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:22:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 20:22:30,591 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-10 20:22:30,592 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-10 20:22:30,592 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-10 20:22:30,592 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,592 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,593 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,593 INFO L264 CegarLoopResult]: At program point evalEXIT(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,593 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-10 20:22:30,593 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-10 20:22:30,593 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 20:22:30,594 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-10 20:22:30,594 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-10 20:22:30,594 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,594 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,594 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-10 20:22:30,595 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-10 20:22:30,595 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-10 20:22:30,595 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-10 20:22:30,595 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-10 20:22:30,595 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))) [2020-07-10 20:22:30,596 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-10 20:22:30,596 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))) [2020-07-10 20:22:30,596 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))) [2020-07-10 20:22:30,597 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))) [2020-07-10 20:22:30,617 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. [2020-07-10 20:22:30,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:22:30 BoogieIcfgContainer [2020-07-10 20:22:30,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:22:30,634 INFO L168 Benchmark]: Toolchain (without parser) took 2286.61 ms. Allocated memory was 148.9 MB in the beginning and 230.2 MB in the end (delta: 81.3 MB). Free memory was 106.9 MB in the beginning and 125.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,635 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 125.5 MB in the beginning and 125.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.79 ms. Allocated memory is still 148.9 MB. Free memory was 106.7 MB in the beginning and 97.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,637 INFO L168 Benchmark]: Boogie Preprocessor took 155.78 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 97.2 MB in the beginning and 183.0 MB in the end (delta: -85.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,639 INFO L168 Benchmark]: RCFGBuilder took 274.54 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 168.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,640 INFO L168 Benchmark]: TraceAbstraction took 1586.68 ms. Allocated memory was 203.9 MB in the beginning and 230.2 MB in the end (delta: 26.2 MB). Free memory was 168.3 MB in the beginning and 125.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,644 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 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 125.5 MB in the beginning and 125.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.79 ms. Allocated memory is still 148.9 MB. Free memory was 106.7 MB in the beginning and 97.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.78 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 97.2 MB in the beginning and 183.0 MB in the end (delta: -85.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.54 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 168.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1586.68 ms. Allocated memory was 203.9 MB in the beginning and 230.2 MB in the end (delta: 26.2 MB). Free memory was 168.3 MB in the beginning and 125.2 MB in the end (delta: 43.2 MB). Peak memory consumption was 69.4 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: 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...