/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/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:31:32,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:31:32,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:31:32,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:31:32,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:31:32,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:31:32,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:31:32,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:31:32,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:31:32,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:31:32,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:31:32,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:31:32,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:31:32,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:31:32,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:31:32,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:31:32,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:31:32,688 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 00:31:32,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:31:32,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:31:32,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:31:32,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:31:32,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:31:32,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:31:32,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:31:32,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:31:32,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:31:32,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:31:32,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:31:32,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:31:32,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:31:32,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:31:32,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:31:32,715 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:31:32,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:31:32,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:31:32,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:31:32,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:31:32,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:31:32,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:31:32,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:31:33,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:31:33,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:31:33,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:31:33,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:31:33,126 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:31:33,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2021-02-24 00:31:33,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f38f1fa/4b75fef192fb43f08a9f826ad7c1fe01/FLAG8d9365f6b [2021-02-24 00:31:33,861 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:31:33,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2021-02-24 00:31:33,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f38f1fa/4b75fef192fb43f08a9f826ad7c1fe01/FLAG8d9365f6b [2021-02-24 00:31:34,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f38f1fa/4b75fef192fb43f08a9f826ad7c1fe01 [2021-02-24 00:31:34,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:31:34,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:31:34,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:31:34,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:31:34,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:31:34,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed55b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34, skipping insertion in model container [2021-02-24 00:31:34,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:31:34,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:31:34,440 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/odd.c[350,363] [2021-02-24 00:31:34,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:31:34,466 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:31:34,482 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/odd.c[350,363] [2021-02-24 00:31:34,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:31:34,504 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:31:34,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34 WrapperNode [2021-02-24 00:31:34,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:31:34,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:31:34,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:31:34,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:31:34,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (1/1) ... [2021-02-24 00:31:34,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:31:34,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:31:34,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:31:34,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:31:34,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (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 00:31:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:31:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:31:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:31:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:31:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:31:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:31:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:31:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:31:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:31:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:31:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:31:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:31:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:31:35,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:31:35,057 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:31:35,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:31:35 BoogieIcfgContainer [2021-02-24 00:31:35,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:31:35,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:31:35,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:31:35,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:31:35,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:31:34" (1/3) ... [2021-02-24 00:31:35,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a9670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:31:35, skipping insertion in model container [2021-02-24 00:31:35,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:31:34" (2/3) ... [2021-02-24 00:31:35,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a9670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:31:35, skipping insertion in model container [2021-02-24 00:31:35,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:31:35" (3/3) ... [2021-02-24 00:31:35,132 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2021-02-24 00:31:35,146 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:31:35,152 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:31:35,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:31:35,206 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:31:35,206 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:31:35,206 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:31:35,206 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:31:35,206 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:31:35,207 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:31:35,207 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:31:35,207 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:31:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-24 00:31:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 00:31:35,238 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:35,240 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] [2021-02-24 00:31:35,240 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:35,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1932693874, now seen corresponding path program 1 times [2021-02-24 00:31:35,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:35,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026763049] [2021-02-24 00:31:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:35,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:35,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:35,597 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 00:31:35,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026763049] [2021-02-24 00:31:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:31:35,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:31:35,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439708510] [2021-02-24 00:31:35,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:31:35,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:35,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:31:35,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:31:35,638 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-24 00:31:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:35,861 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-02-24 00:31:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:31:35,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-24 00:31:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:35,885 INFO L225 Difference]: With dead ends: 49 [2021-02-24 00:31:35,886 INFO L226 Difference]: Without dead ends: 29 [2021-02-24 00:31:35,891 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 00:31:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-24 00:31:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-24 00:31:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-24 00:31:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-02-24 00:31:35,967 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 24 [2021-02-24 00:31:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:35,967 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-02-24 00:31:35,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:31:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-02-24 00:31:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-24 00:31:35,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:35,970 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] [2021-02-24 00:31:35,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:31:35,970 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:35,971 INFO L82 PathProgramCache]: Analyzing trace with hash 887982277, now seen corresponding path program 1 times [2021-02-24 00:31:35,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:35,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361730664] [2021-02-24 00:31:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:31:36,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,121 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 00:31:36,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361730664] [2021-02-24 00:31:36,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:31:36,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 00:31:36,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94561048] [2021-02-24 00:31:36,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:31:36,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:31:36,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:31:36,127 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2021-02-24 00:31:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:36,362 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-02-24 00:31:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:31:36,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-24 00:31:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:36,365 INFO L225 Difference]: With dead ends: 39 [2021-02-24 00:31:36,366 INFO L226 Difference]: Without dead ends: 33 [2021-02-24 00:31:36,367 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 00:31:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-24 00:31:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-02-24 00:31:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-24 00:31:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-02-24 00:31:36,380 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2021-02-24 00:31:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:36,380 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-02-24 00:31:36,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:31:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-02-24 00:31:36,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-24 00:31:36,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:31:36,383 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] [2021-02-24 00:31:36,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:31:36,383 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:31:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:31:36,384 INFO L82 PathProgramCache]: Analyzing trace with hash 136008254, now seen corresponding path program 1 times [2021-02-24 00:31:36,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:31:36,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142260449] [2021-02-24 00:31:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:31:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:31:36,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:31:36,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:31:36,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:31:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:31:36,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:31:36,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:31:36,608 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 00:31:36,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142260449] [2021-02-24 00:31:36,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:31:36,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:31:36,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188665752] [2021-02-24 00:31:36,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:31:36,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:31:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:31:36,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:31:36,612 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 7 states. [2021-02-24 00:31:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:31:36,887 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-02-24 00:31:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:31:36,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-02-24 00:31:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:31:36,889 INFO L225 Difference]: With dead ends: 33 [2021-02-24 00:31:36,890 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:31:36,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:31:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:31:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:31:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:31:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:31:36,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-02-24 00:31:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:31:36,895 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:31:36,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:31:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:31:36,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:31:36,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:31:36,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:31:37,399 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:31:37,400 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:31:37,400 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:31:37,400 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,400 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,401 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,401 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,401 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,401 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,401 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,402 INFO L192 CegarLoopUtils]: At program point L3-6(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,402 INFO L192 CegarLoopUtils]: At program point L3-7(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,402 INFO L192 CegarLoopUtils]: At program point L3-8(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,402 INFO L192 CegarLoopUtils]: At program point L3-9(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,402 INFO L192 CegarLoopUtils]: At program point L3-10(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,403 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 00:31:37,403 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,403 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:31:37,403 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,403 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:37,404 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 00:31:37,405 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,405 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2021-02-24 00:31:37,405 INFO L185 CegarLoopUtils]: At program point L13-1(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,405 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,406 INFO L185 CegarLoopUtils]: At program point L13-4(line 13) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,406 INFO L185 CegarLoopUtils]: At program point L13-5(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,406 INFO L185 CegarLoopUtils]: At program point L13-6(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-02-24 00:31:37,406 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:37,406 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:37,407 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-24 00:31:37,407 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (<= 1 __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2021-02-24 00:31:37,407 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-24 00:31:37,407 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-24 00:31:37,407 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-24 00:31:37,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:31:37 BoogieIcfgContainer [2021-02-24 00:31:37,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:31:37,430 INFO L168 Benchmark]: Toolchain (without parser) took 3211.89 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.9 MB in the beginning and 131.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:37,431 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:31:37,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:37,433 INFO L168 Benchmark]: Boogie Preprocessor took 45.59 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:37,434 INFO L168 Benchmark]: RCFGBuilder took 518.45 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 102.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:37,435 INFO L168 Benchmark]: TraceAbstraction took 2341.32 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.2 MB in the beginning and 131.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 86.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:31:37,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.59 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.45 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 102.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2341.32 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.2 MB in the beginning and 131.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 86.8 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: 2 * (x / 2) + 1 <= x - 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, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 48 SDslu, 141 SDs, 0 SdLazy, 97 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 37 LocationsWithAnnotation, 51 PreInvPairs, 67 NumberOfFragments, 131 HoareAnnotationTreeSize, 51 FomulaSimplifications, 264 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 37 FomulaSimplificationsInter, 658 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 5881 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...