/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:31:24,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:31:24,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:31:24,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:31:24,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:31:24,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:31:24,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:31:24,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:31:24,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:31:24,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:31:24,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:31:24,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:31:24,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:31:24,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:31:24,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:31:24,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:31:24,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:31:24,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:31:24,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:31:24,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:31:24,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:31:24,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:31:24,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:31:24,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:31:24,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:31:24,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:31:24,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:31:24,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:31:24,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:31:24,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:31:24,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:31:24,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:31:24,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:31:24,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:31:24,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:31:24,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:31:24,962 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:31:24,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:31:24,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:31:24,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:31:24,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:31:24,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:31:24,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:31:24,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:31:25,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:31:25,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:31:25,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:31:25,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:31:25,419 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:31:25,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2021-02-24 00:31:25,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8717cb8e/85d12b3359cc4dda8a87cde47870ac0e/FLAG27d5f6407 [2021-02-24 00:31:26,150 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:31:26,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2021-02-24 00:31:26,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8717cb8e/85d12b3359cc4dda8a87cde47870ac0e/FLAG27d5f6407 [2021-02-24 00:31:26,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8717cb8e/85d12b3359cc4dda8a87cde47870ac0e [2021-02-24 00:31:26,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:31:26,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:31:26,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:31:26,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:31:26,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:31:26,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba6917f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26, skipping insertion in model container [2021-02-24 00:31:26,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:31:26,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:31:26,731 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c[351,364] [2021-02-24 00:31:26,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:31:26,752 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:31:26,768 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c[351,364] [2021-02-24 00:31:26,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:31:26,787 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:31:26,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26 WrapperNode [2021-02-24 00:31:26,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:31:26,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:31:26,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:31:26,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:31:26,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (1/1) ... [2021-02-24 00:31:26,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:31:26,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:31:26,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:31:26,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:31:26,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (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 [2021-02-24 00:31:26,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:31:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:31:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:31:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:31:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:31:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:31:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:31:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:31:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:31:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:31:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:31:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:31:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:31:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:31:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:31:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:31:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:31:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:31:27,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:31:27,277 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:31:27,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:31:27 BoogieIcfgContainer [2021-02-24 00:31:27,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:31:27,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:31:27,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:31:27,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:31:27,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:31:26" (1/3) ... [2021-02-24 00:31:27,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35998f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:31:27, skipping insertion in model container [2021-02-24 00:31:27,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:26" (2/3) ... [2021-02-24 00:31:27,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35998f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:31:27, skipping insertion in model container [2021-02-24 00:31:27,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:31:27" (3/3) ... [2021-02-24 00:31:27,294 INFO L111 eAbstractionObserver]: Analyzing ICFG even.c [2021-02-24 00:31:27,314 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:31:27,323 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:31:27,345 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:31:27,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:31:27,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:31:27,414 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:31:27,415 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:31:27,415 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:31:27,415 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:31:27,415 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:31:27,415 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:31:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-24 00:31:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 00:31:27,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:27,459 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] [2021-02-24 00:31:27,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1714919044, now seen corresponding path program 1 times [2021-02-24 00:31:27,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:27,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229532188] [2021-02-24 00:31:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:27,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:27,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:27,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:27,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:27,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229532188] [2021-02-24 00:31:27,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:31:27,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:31:27,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208007637] [2021-02-24 00:31:27,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:31:27,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:27,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:31:27,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:31:27,954 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-02-24 00:31:28,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:28,133 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-02-24 00:31:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:31:28,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-24 00:31:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:28,149 INFO L225 Difference]: With dead ends: 50 [2021-02-24 00:31:28,149 INFO L226 Difference]: Without dead ends: 30 [2021-02-24 00:31:28,156 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 [2021-02-24 00:31:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-24 00:31:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-24 00:31:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-24 00:31:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-02-24 00:31:28,220 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2021-02-24 00:31:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:28,221 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-02-24 00:31:28,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:31:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-02-24 00:31:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-24 00:31:28,223 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:28,223 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] [2021-02-24 00:31:28,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:31:28,224 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:28,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1521130299, now seen corresponding path program 1 times [2021-02-24 00:31:28,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:28,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345148955] [2021-02-24 00:31:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:28,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:28,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:28,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:28,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:28,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:28,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345148955] [2021-02-24 00:31:28,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:31:28,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:31:28,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397843501] [2021-02-24 00:31:28,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:28,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:28,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:28,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:28,452 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2021-02-24 00:31:28,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:28,699 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-02-24 00:31:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:28,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-24 00:31:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:28,702 INFO L225 Difference]: With dead ends: 40 [2021-02-24 00:31:28,702 INFO L226 Difference]: Without dead ends: 34 [2021-02-24 00:31:28,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:31:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-24 00:31:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-02-24 00:31:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-24 00:31:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-02-24 00:31:28,715 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 27 [2021-02-24 00:31:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:28,716 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-02-24 00:31:28,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-02-24 00:31:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:31:28,718 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:28,718 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2021-02-24 00:31:28,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:31:28,718 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1827953076, now seen corresponding path program 1 times [2021-02-24 00:31:28,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:28,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817058155] [2021-02-24 00:31:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:28,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:28,806 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-24 00:31:28,808 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-24 00:31:28,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:28,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:31:28,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:28,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:28,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:31:28,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817058155] [2021-02-24 00:31:28,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:28,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:28,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495432994] [2021-02-24 00:31:28,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:28,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:28,926 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2021-02-24 00:31:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:29,203 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-24 00:31:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:29,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2021-02-24 00:31:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:29,205 INFO L225 Difference]: With dead ends: 34 [2021-02-24 00:31:29,205 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:31:29,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:31:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:31:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:31:29,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:31:29,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-24 00:31:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:29,211 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:31:29,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:31:29,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:31:29,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:31:29,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:31:29,737 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:31:29,737 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:31:29,738 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:31:29,738 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,738 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,738 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,738 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L3-6(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L3-7(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L3-8(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,739 INFO L192 CegarLoopUtils]: At program point L3-9(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,740 INFO L192 CegarLoopUtils]: At program point L3-10(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,740 INFO L192 CegarLoopUtils]: At program point L3-11(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,740 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:31:29,740 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,741 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:31:29,742 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:29,742 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:29,742 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 00:31:29,742 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,742 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:29,743 INFO L185 CegarLoopUtils]: At program point L13-1(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,743 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,743 INFO L185 CegarLoopUtils]: At program point L13-4(line 13) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,743 INFO L185 CegarLoopUtils]: At program point L13-5(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,744 INFO L185 CegarLoopUtils]: At program point L13-6(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-24 00:31:29,744 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:29,744 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:29,744 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:31:29,744 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:31:29,744 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:31:29,745 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:29,745 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:31:29,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:31:29 BoogieIcfgContainer [2021-02-24 00:31:29,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:31:29,765 INFO L168 Benchmark]: Toolchain (without parser) took 3290.16 ms. Allocated memory was 161.5 MB in the beginning and 205.5 MB in the end (delta: 44.0 MB). Free memory was 136.9 MB in the beginning and 156.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 114.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:29,766 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:31:29,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.20 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 126.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:29,767 INFO L168 Benchmark]: Boogie Preprocessor took 38.02 ms. Allocated memory is still 161.5 MB. Free memory was 126.5 MB in the beginning and 125.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:29,768 INFO L168 Benchmark]: RCFGBuilder took 451.71 ms. Allocated memory is still 161.5 MB. Free memory was 125.2 MB in the beginning and 111.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:29,769 INFO L168 Benchmark]: TraceAbstraction took 2481.87 ms. Allocated memory was 161.5 MB in the beginning and 205.5 MB in the end (delta: 44.0 MB). Free memory was 110.7 MB in the beginning and 156.4 MB in the end (delta: -45.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:29,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.20 ms. Allocated memory is still 161.5 MB. Free memory was 135.8 MB in the beginning and 126.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.02 ms. Allocated memory is still 161.5 MB. Free memory was 126.5 MB in the beginning and 125.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 451.71 ms. Allocated memory is still 161.5 MB. Free memory was 125.2 MB in the beginning and 111.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2481.87 ms. Allocated memory was 161.5 MB in the beginning and 205.5 MB in the end (delta: 44.0 MB). Free memory was 110.7 MB in the beginning and 156.4 MB in the end (delta: -45.7 MB). Peak memory consumption was 88.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 46 SDslu, 148 SDs, 0 SdLazy, 114 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 52 PreInvPairs, 68 NumberOfFragments, 177 HoareAnnotationTreeSize, 52 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 627 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...