/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:48:35,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:48:35,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:48:35,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:48:35,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:48:35,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:48:35,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:48:35,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:48:35,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:48:35,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:48:35,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:48:35,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:48:35,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:48:35,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:48:35,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:48:35,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:48:35,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:48:35,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:48:35,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:48:35,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:48:35,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:48:35,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:48:35,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:48:35,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:48:35,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:48:35,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:48:35,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:48:35,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:48:35,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:48:35,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:48:35,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:48:35,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:48:35,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:48:35,991 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:48:35,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:48:35,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:48:35,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:48:35,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:48:35,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:48:35,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:48:35,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:48:35,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:48:35,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:48:35,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:48:35,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:48:35,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:48:35,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:48:35,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:48:35,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:48:35,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:48:35,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:48:35,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:48:35,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:48:35,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:48:35,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:48:35,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:48:35,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:48:35,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:48:36,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:48:36,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:48:36,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:48:36,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:48:36,416 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:48:36,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2021-02-21 15:48:36,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46ac2018/373cf30aef4d4880bba0a14da34bca39/FLAG46449d890 [2021-02-21 15:48:37,211 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:48:37,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2021-02-21 15:48:37,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46ac2018/373cf30aef4d4880bba0a14da34bca39/FLAG46449d890 [2021-02-21 15:48:37,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46ac2018/373cf30aef4d4880bba0a14da34bca39 [2021-02-21 15:48:37,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:48:37,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:48:37,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:37,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:48:37,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:48:37,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fea3054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37, skipping insertion in model container [2021-02-21 15:48:37,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:48:37,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:48:37,786 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] [2021-02-21 15:48:37,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:37,820 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:48:37,840 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] [2021-02-21 15:48:37,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:48:37,900 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:48:37,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37 WrapperNode [2021-02-21 15:48:37,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:48:37,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:48:37,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:48:37,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:48:37,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (1/1) ... [2021-02-21 15:48:37,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:48:37,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:48:37,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:48:37,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:48:37,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (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 [2021-02-21 15:48:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:48:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:48:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:48:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 15:48:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:48:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:48:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:48:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:48:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:48:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 15:48:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 15:48:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:48:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:48:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:48:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:48:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:48:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:48:38,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:48:38,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:48:38,574 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 15:48:38,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:38 BoogieIcfgContainer [2021-02-21 15:48:38,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:48:38,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:48:38,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:48:38,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:48:38,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:48:37" (1/3) ... [2021-02-21 15:48:38,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4376145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:38, skipping insertion in model container [2021-02-21 15:48:38,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:37" (2/3) ... [2021-02-21 15:48:38,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4376145d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:38, skipping insertion in model container [2021-02-21 15:48:38,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:38" (3/3) ... [2021-02-21 15:48:38,624 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2021-02-21 15:48:38,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:48:38,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:48:38,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:48:38,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:48:38,728 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:48:38,729 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:48:38,729 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:48:38,729 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:48:38,729 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:48:38,729 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:48:38,729 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:48:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-21 15:48:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 15:48:38,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:38,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:38,767 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:38,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash -154663714, now seen corresponding path program 1 times [2021-02-21 15:48:38,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:38,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175102956] [2021-02-21 15:48:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:38,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:38,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:38,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:38,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:39,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175102956] [2021-02-21 15:48:39,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:39,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 15:48:39,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582792590] [2021-02-21 15:48:39,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 15:48:39,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 15:48:39,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 15:48:39,136 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2021-02-21 15:48:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:39,214 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-02-21 15:48:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:48:39,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-21 15:48:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:39,224 INFO L225 Difference]: With dead ends: 39 [2021-02-21 15:48:39,225 INFO L226 Difference]: Without dead ends: 22 [2021-02-21 15:48:39,228 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 [2021-02-21 15:48:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-21 15:48:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-02-21 15:48:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-21 15:48:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2021-02-21 15:48:39,270 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 11 [2021-02-21 15:48:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:39,271 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2021-02-21 15:48:39,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 15:48:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2021-02-21 15:48:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 15:48:39,272 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:39,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:48:39,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:48:39,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:39,274 INFO L82 PathProgramCache]: Analyzing trace with hash -213769058, now seen corresponding path program 1 times [2021-02-21 15:48:39,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:39,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971054662] [2021-02-21 15:48:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:39,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:48:39,383 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-21 15:48:39,388 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-21 15:48:39,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:39,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:39,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971054662] [2021-02-21 15:48:39,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:39,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:48:39,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56330996] [2021-02-21 15:48:39,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:48:39,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:48:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:48:39,475 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 4 states. [2021-02-21 15:48:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:39,607 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2021-02-21 15:48:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 15:48:39,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-02-21 15:48:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:39,610 INFO L225 Difference]: With dead ends: 29 [2021-02-21 15:48:39,611 INFO L226 Difference]: Without dead ends: 24 [2021-02-21 15:48:39,612 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 [2021-02-21 15:48:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-21 15:48:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-02-21 15:48:39,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-21 15:48:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2021-02-21 15:48:39,621 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 11 [2021-02-21 15:48:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:39,622 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2021-02-21 15:48:39,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:48:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2021-02-21 15:48:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 15:48:39,623 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:39,623 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] [2021-02-21 15:48:39,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:48:39,623 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1726513949, now seen corresponding path program 1 times [2021-02-21 15:48:39,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:39,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731293233] [2021-02-21 15:48:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:39,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 15:48:39,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:48:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:48:39,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:48:39,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:48:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:48:39,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731293233] [2021-02-21 15:48:39,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:48:39,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:48:39,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491272012] [2021-02-21 15:48:39,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:48:39,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:48:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:48:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:48:39,707 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand 4 states. [2021-02-21 15:48:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:48:39,971 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2021-02-21 15:48:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 15:48:39,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-21 15:48:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:48:39,973 INFO L225 Difference]: With dead ends: 51 [2021-02-21 15:48:39,974 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 15:48:39,974 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 [2021-02-21 15:48:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 15:48:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-02-21 15:48:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-21 15:48:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-02-21 15:48:39,998 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 22 [2021-02-21 15:48:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:48:39,998 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-02-21 15:48:39,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:48:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-02-21 15:48:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 15:48:40,000 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:48:40,001 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] [2021-02-21 15:48:40,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:48:40,002 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:48:40,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:48:40,002 INFO L82 PathProgramCache]: Analyzing trace with hash 622763737, now seen corresponding path program 1 times [2021-02-21 15:48:40,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:48:40,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309621677] [2021-02-21 15:48:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:48:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:40,051 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:48:40,082 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:48:40,109 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:48:40,109 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:48:40,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:48:40,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:48:40 BoogieIcfgContainer [2021-02-21 15:48:40,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:48:40,155 INFO L168 Benchmark]: Toolchain (without parser) took 2569.92 ms. Allocated memory is still 169.9 MB. Free memory was 145.8 MB in the beginning and 66.8 MB in the end (delta: 79.0 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:40,156 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 169.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:48:40,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.90 ms. Allocated memory is still 169.9 MB. Free memory was 144.7 MB in the beginning and 134.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:40,159 INFO L168 Benchmark]: Boogie Preprocessor took 47.70 ms. Allocated memory is still 169.9 MB. Free memory was 134.8 MB in the beginning and 133.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:40,160 INFO L168 Benchmark]: RCFGBuilder took 626.13 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 153.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:40,162 INFO L168 Benchmark]: TraceAbstraction took 1572.70 ms. Allocated memory is still 169.9 MB. Free memory was 152.8 MB in the beginning and 66.8 MB in the end (delta: 86.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:48:40,169 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 169.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 298.90 ms. Allocated memory is still 169.9 MB. Free memory was 144.7 MB in the beginning and 134.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.70 ms. Allocated memory is still 169.9 MB. Free memory was 134.8 MB in the beginning and 133.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.13 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 153.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1572.70 ms. Allocated memory is still 169.9 MB. Free memory was 152.8 MB in the beginning and 66.8 MB in the end (delta: 86.0 MB). Peak memory consumption was 84.9 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 VAL [x=0, y=4294967295] [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 VAL [x=2, y=4294967295] [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 VAL [x=0, y=4294967295] [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 VAL [x=2, y=4294967295] [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 VAL [x=0, y=4294967295] [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 VAL [x=2, y=4294967295] [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 VAL [x=4294967294, y=4294967295] [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 VAL [x=2, y=4294967295] [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 VAL [x=4, y=4294967295] [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 VAL [x=0, y=4294967295] [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 VAL [x=4294967292, y=4294967295] [L17] COND FALSE !(x < 99) VAL [x=4294967292, y=4294967295] [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 104 SDslu, 17 SDs, 0 SdLazy, 64 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 2038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...