/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:38:41,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:41,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:42,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:38:42,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:42,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:42,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:42,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:42,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:42,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:42,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:42,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:42,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:42,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:42,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:42,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:42,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:38:42,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:42,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:42,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:42,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:42,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:42,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:42,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:42,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:42,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:42,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:42,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:42,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:42,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:42,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:42,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:42,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:42,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:42,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:42,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:42,148 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:42,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:42,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:42,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:42,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:42,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:42,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:42,150 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:42,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:42,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:42,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:42,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:42,654 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:42,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2021-02-23 17:38:42,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f6bd314/3b7593b67ea642df9189eb8d91e47a4a/FLAG85b028547 [2021-02-23 17:38:43,482 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:43,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2021-02-23 17:38:43,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f6bd314/3b7593b67ea642df9189eb8d91e47a4a/FLAG85b028547 [2021-02-23 17:38:43,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f6bd314/3b7593b67ea642df9189eb8d91e47a4a [2021-02-23 17:38:43,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:43,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:43,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:43,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:43,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:43,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:43" (1/1) ... [2021-02-23 17:38:43,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df4ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:43, skipping insertion in model container [2021-02-23 17:38:43,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:43" (1/1) ... [2021-02-23 17:38:43,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:43,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:44,097 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2021-02-23 17:38:44,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:44,146 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:44,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2021-02-23 17:38:44,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:44,218 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44 WrapperNode [2021-02-23 17:38:44,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:44,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:44,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:44,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:44,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (1/1) ... [2021-02-23 17:38:44,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:44,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:44,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:44,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:44,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (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 [2021-02-23 17:38:44,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:44,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:44,401 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:44,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 17:38:44,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:44,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:44,815 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 17:38:44,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:44 BoogieIcfgContainer [2021-02-23 17:38:44,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:44,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:44,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:44,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:44,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:43" (1/3) ... [2021-02-23 17:38:44,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eb9756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:44, skipping insertion in model container [2021-02-23 17:38:44,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:44" (2/3) ... [2021-02-23 17:38:44,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71eb9756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:44, skipping insertion in model container [2021-02-23 17:38:44,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:44" (3/3) ... [2021-02-23 17:38:44,827 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2021-02-23 17:38:44,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:44,839 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:44,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:44,905 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:44,905 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:44,905 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:44,905 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:44,905 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:44,906 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:44,906 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:44,906 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2021-02-23 17:38:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 17:38:44,937 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:44,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:44,939 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1882360896, now seen corresponding path program 1 times [2021-02-23 17:38:44,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:44,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043875776] [2021-02-23 17:38:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:45,042 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:45,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:45,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:45,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043875776] [2021-02-23 17:38:45,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:45,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 17:38:45,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880103936] [2021-02-23 17:38:45,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 17:38:45,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:45,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 17:38:45,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 17:38:45,288 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2021-02-23 17:38:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:45,392 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2021-02-23 17:38:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 17:38:45,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-02-23 17:38:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:45,406 INFO L225 Difference]: With dead ends: 71 [2021-02-23 17:38:45,406 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 17:38:45,410 INFO L677 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 [2021-02-23 17:38:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 17:38:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-23 17:38:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 17:38:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-02-23 17:38:45,509 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 20 [2021-02-23 17:38:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:45,511 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-02-23 17:38:45,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 17:38:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-02-23 17:38:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 17:38:45,514 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:45,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:45,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:45,515 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:45,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1961783702, now seen corresponding path program 1 times [2021-02-23 17:38:45,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:45,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079262390] [2021-02-23 17:38:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:45,527 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:45,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:45,688 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-23 17:38:45,690 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-23 17:38:45,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:45,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:45,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:45,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079262390] [2021-02-23 17:38:45,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:45,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:38:45,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906831630] [2021-02-23 17:38:45,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:38:45,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:45,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:38:45,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:38:45,741 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 4 states. [2021-02-23 17:38:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:46,021 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-23 17:38:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:38:46,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-02-23 17:38:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:46,026 INFO L225 Difference]: With dead ends: 63 [2021-02-23 17:38:46,026 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 17:38:46,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:38:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 17:38:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2021-02-23 17:38:46,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-23 17:38:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-02-23 17:38:46,067 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 20 [2021-02-23 17:38:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:46,068 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-02-23 17:38:46,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:38:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-02-23 17:38:46,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 17:38:46,071 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:46,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:46,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:46,077 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash 567746209, now seen corresponding path program 1 times [2021-02-23 17:38:46,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:46,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074819225] [2021-02-23 17:38:46,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:46,107 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 17:38:46,111 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:46,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:46,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:46,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:46,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:38:46,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:46,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:46,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:46,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:46,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074819225] [2021-02-23 17:38:46,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:46,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:38:46,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059285492] [2021-02-23 17:38:46,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:38:46,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:38:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:38:46,269 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2021-02-23 17:38:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:46,548 INFO L93 Difference]: Finished difference Result 104 states and 135 transitions. [2021-02-23 17:38:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:38:46,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2021-02-23 17:38:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:46,554 INFO L225 Difference]: With dead ends: 104 [2021-02-23 17:38:46,554 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 17:38:46,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:38:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 17:38:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-02-23 17:38:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 17:38:46,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-02-23 17:38:46,589 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 41 [2021-02-23 17:38:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:46,589 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-02-23 17:38:46,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:38:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-02-23 17:38:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 17:38:46,592 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:46,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:46,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:38:46,593 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2018797759, now seen corresponding path program 1 times [2021-02-23 17:38:46,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:46,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931189602] [2021-02-23 17:38:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:46,698 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 17:38:46,700 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:46,766 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:46,816 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:46,857 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:38:46,857 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:38:46,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:38:46,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:46 BoogieIcfgContainer [2021-02-23 17:38:46,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:46,883 INFO L168 Benchmark]: Toolchain (without parser) took 3051.02 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 60.0 MB in the end (delta: 67.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:46,884 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:46,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.42 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:46,887 INFO L168 Benchmark]: Boogie Preprocessor took 75.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:46,893 INFO L168 Benchmark]: RCFGBuilder took 519.18 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 128.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:46,895 INFO L168 Benchmark]: TraceAbstraction took 2061.76 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 60.0 MB in the end (delta: 68.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:46,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.42 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 519.18 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 128.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2061.76 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 60.0 MB in the end (delta: 68.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 [L17] COND FALSE !(x < 99) [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 192 SDslu, 36 SDs, 0 SdLazy, 113 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...